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Maths Quotes

Six is a number perfect in itself, and not because God created the world in six days; rather the contrary is true. God created the world in six days because this number is perfect, and it would remain perfect, even if the work of the six days did not exis

Saint Augustine of Hippo

It is easier to square the circle than to get round a mathematician.

Augustus de Morgan

Placed User Comments

M4Math helped me a lot.

Vipul Chavan 4 years ago

Thanks m4 maths for helping to get placed in several companies.
I must recommend this website for placement preparations.

yash mittal 5 years ago

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(4 Days ago) "Other"

Hey, I am a student starting to prepare for placements can someone guide me on how to start preparing for aptitude

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(1 Month ago) "Other"

Two cars with speed of 15 kmph and 30 kmph respectively are 100 km apart and face each other. The distance between them 5 minutes before crossing is
1. 2.75
2. 3.75
3. 4.75
4. 5.75
Answer: 3.75

Explanation:
their relative speed will be = 15+30 = 45 kmph.
As the two cars are moving towards each other,

Reply Like? Yes | No (1)

(1 Month ago) "Other"

Two numbers are in the ratio of 2:9. If their H. C. F. is 19, numbers are:
1. 6, 27
2. 8, 36
3. 38, 171
4. 20, 90
Answer: 38,171

Explanation:
Let the numbers be 2X and 9X
Then their H.C.F. is X, so X = 19
∴ Numbers are (2×19 and 9×19) i.e. 38 and 171

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(1 Month ago) "Other"

If the average of four consecutive odd numbers is 12, find the smallest of these numbers?
1. 5
2. 7
3. 9
4. 11
Answer: 9

Explanation:
Let the numbers be x, x+2, x+4 and x+6
Then (x + x + 2 + x + 4 + x + 6)/4 = 12
∴ 4x + 12 = 48
∴ x = 9

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(1 Month ago) "Other"

Which is not the prime number?.
1. 43
2. 57
3. 73
4. 101
Answer: 57

Explanation:
A positive natural number is called prime number if nothing divides it except the number itself and 1.
57 is not a prime number as it is divisible by 3 and 19 also, apart from 1 and 57.

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(1 Month ago) "Other"

5. In an IPL match, the current run rate of CSK is 4.5 in 6 overs. What should be the required run rate of CSK inorder to achieve the target of 153 against KKR?
1. 7
2. 8
3. 8.5
4. 9
Answer: 9

Explanation:
Current run rate = 4.5 in 6 overs
Runs already made = 4.5 * 6 = 27
Target = 153
Runs still required = 153 – 27 = 126
Overs left = 14
Therefore required run rate = 126 / 14 = 9

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(2 Months ago) "Other"

Sita can complete a work in 10 days. Geeta is 25% more efficient than Sita and Rita is 60% more efficient than Geeta. In how many days will all three of them together complete that work?

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(2 Months ago) "Other"

A secret can be said by only 2 persons in 5 minutes. The same person tells the secret to 2 more persons and so on. How long will take to tell it to tell 768 persons?

a) 500 min

b) 50 min

c) 47.5 min

d) 49 min

Reply Like? Yes (2) | No (1)

to (2 Months ago) "Other"

Hello Saurabh Bhan, I Have Problem Releted With Math. because My Math is So Week. you Can Help Me..... Contact: manofpowerx@gmail.com

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(2 Months ago) "Other"

Choose the correct option.

Options

A language has 28 different letters in total. Each word in the language consists of a maximum of 7 letters. A programmer wants to create a data type to store a word of this language. She decides to store the word as an array of letters. How many bits should she assign to the data type to store all kinds of words of the language?

7

35

28

196

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(2 Months ago) "Other"

A basket ball is dropped from a height of 20 feet. It bounces back each time to a height which is one half of the height of the last bounce. How far approximately will the ball have travelled before it comes to rest?

30 feet

O40 feet

O 60 feet

can not be determined

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(4 Months ago) "Other"

A boat goes 8 km upstream in 24 minutes. The speed of stream is 4 km/hr. The speed of boat in still water is:

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(4 Months ago)

upstream speed=8*60/24
upstream speed=20km/hr
therefore still water speed=20+4=24km/hr.
ans=24km/hr

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(4 Months ago) "Other"

1. 8, 7, 10, 21, 68, x

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(5 Months ago) "Other"

A person went with flowers for worship to Three temples and offered same flowers at each temple. He purchased enough flowers before entering the gate of each temple to make the number he had with him become double, the first, second, and third temple. The number of flowers offered at each temple was same and he had no flowers remaining with him after offering at the Third temple. He started with how many flowers and How many flowers offered to each temple?

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(6 Months ago) "Other"

Rs 8000 was divided among 5 men, 8 women and 10 boys, such that the ratio of the shares of men, women, and boys is 17:12:11. What is the share of the boy?

a) Rs. 220

b) Rs. 480

c) Rs. 300

d) Rs. 680

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(6 Months ago) "Other"

Question Number 14 Three identical jugs are each half filled with sugar solution, each of different concentration. When the content of the third jag is divided into two halves and rach half is poured into each of the first two jugs, the concentration of sugar in the first jug decreases by 20% and that in second jug increases by 10%. What is the ratio of initial quantity of sugar in the first jug to that in the second jug?

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(8 Months ago) "Other"

The 'digital sum' of the year 1947 is 1+9+4+7 = 21, and 21 is not a perfect square. How many years 1800 and 1999 have a square 'digital sum'?

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(10 Months ago) "Other"

(i) X, Y, Z, P and Rare sitting in a row in front of a camera. (ii) X is on the left of the person sitting in the centre, but is on the right of Y. (iii) Z is on the right of P and R is on the right of Z. (iv) R is the second person from the person sitting in the centre Who is between X and 2?

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(10 Months ago) "Other"

The square of a two digit number is divided by half the number. After 36 is added to the quotient, this sum is then divided by 2. The digits of the resulting number are the same as those in the original number, but they are in reverse order. How many numbers fulfill the above criteria?

21

24

02

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(11 Months ago) "Other"

Directions for questions Treat each question independently.

2 rice varieties costing Rs 25 per kg and Rs 35 per kg were mixed in the ratio 2: 3 and sold so as to gain 20%. What was the SP of the mixture (Rs/kg)?

37.2

028.6

30

32

40.5

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to (1 year ago) "Other"

Is Java a pure object-oriented language?

Reply Like? Yes (1) | No (1)

(1 year ago) "Other"

Shanti's school normally FINISHES AT 4 PM. her mom drives from home to pick her up, reaching the school exactly at 4 pm. one day, a half holiday is announced and the School finishes for the day at 1 pm. Rather than sitting and Waiting , Shanti decides to start walking towards home. Her mother meets her along the way and as a result they reach home an hour earlier than normal. what is the ratio of the Shanti's walking speed to her mother's driving Speed?

Reply Like? Yes (2) | No

(1 year ago) "Other"

Consider the series given below:

CQZYXJOVAETXMPBWFQNRBEVWC

In the given series, which one of the letter given in options will be the fourth to the left of fifth to the right of ninth to the left of fifth to the right of fourteenth from the right end?

V

A

F

Settings

Reply Like? Yes (17) | No (2)

(1 year ago) "Other"

Question Number 8

If 49,000,000 has K' odd divisors, How many odd divisors does the number 21,000,000 have?

2

O4 4 /3^ * K

2 ^ * K

7 /3^ * K

1 /2^ * K

Reply Like? Yes (1) | No

(1 year ago) "Other"

P sells an article to Q at 10% profit. If P purchased it at 10% less and dispose off it for Rs 2 less, then P would have profit of 16 (2/3)%. At what price did P purchase the article ?

what is the answer of it

Reply Like? Yes (1) | No (1)

(1 year ago) "Other"

Rashed can stuff advertising circulars into envelopes at the rate of 45 envelopes per minute and Reena require a minute and a half to stuff the same number of envelopes. Working together, how long will it take Rashed and Reena to stuff 300 envelopes?

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(1 year ago) "Other"

Find the interest on Rs.1000 at 5% for 10 years

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(1 year ago)

interest for 1 year =1000(5/100)=50
interest for 10 years= 10(50)=500

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(1 year ago) "Other"

Either Himesh or Mika has more than 100 songs on their respective i-pods. It is also noticed that one of them has at least 150% and at most 250% of what the other has. What is the minimum number of songs that the two could have put together?

168

167

141

127

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(1 year ago) "Other"

The sum of the number of factors of N and that of N2 is 34. If N< 150, how many values can N have?

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(1 year ago) "Other"

The circle O having a diameter of 2cm, has a square inscribed in it. Each side of the square is then taken as a diameter to form 4 smaller circles O". Find the total area of all four O" circles which is outside the circle 0.

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(1 year ago) "Other"

3,4,12,45,196__
a. 1100 b.1005 c.1005 d.1092

Reply Like? Yes (2) | No

(1 year ago)

3x1 + 1^2 = 4
4x2 + 2^2 = 12
12x3 + 3^2 = 45
45x4 + 4^2 = 196
196x5 + 5^2 = 1005 (Correct Option c)

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(1 year ago) "Other"

The greatest r digit number abcd which when divided by 10,15,and 35

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(1 year ago) "Other"

20 रुपये में 20 किलो
मछली 1 किलो मछली 20 रुपये
1 किलो प्याज 1 रुपये
1 किलो चीनी 25 पैसे के साथ खरीदना है..आपको हर एक खरीदना चाहिए ताकि कुल वजन 20 किलो हो जाए आपके पास 20 रुपये हैं

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(2 years ago) "Other"

😀 😃 😄 😁 😆 😅 😂 🤣 🥲 🥹 ☺️ 😊 😇 🙂 🙃 😉 😌 😍 🥰 😘 😗 😙 😚 😋 😛 😝 😜 🤪 🤨 🧐 🤓 😎 🥸 🤩 🥳 😏 😒 😞 😔 😟 😕 🙁 ☹️ 😣 😖 😫 😩 🥺 😢 😭 😮‍💨 😤 😠 😡 🤬 🤯 😳 🥵 🥶 😱 😨 😰 😥 😓 🫣 🤗 🫡 🤔 🫢 🤭 🤫 🤥 😶 😶‍🌫️ 😐 😑 😬 🫠 🙄 😯 😦 😧 😮 😲 🥱 😴 🤤 😪 😵 😵‍💫 🫥 🤐 🥴 🤢 🤮 🤧 😷 🤒 🤕 🤑 🤠 😈 👿 👹 👺 🤡 💩 👻 💀 ☠️ 👽 👾 🤖 🎃 😺 😸 😹 😻 😼 😽 🙀 😿 😾

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(2 years ago) "Other"

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(2 years ago) "Other"

ARe you a nerd yes or no?

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(2 years ago) "Other"

DO you like math?

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(2 years ago) "Other"

sukywukymywukysuky

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to (2 years ago) "Other"

let us discuss the known math problem ma psy so whet

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(2 years ago) "Other"

Guys i really need help with 1+1+1= x like wtf is x supposed to mean

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to (2 years ago) "Other"

100 students appeared for two examination. 60 passed the first, 50 passed the second and 30 passed the both. Find the probability that a student selected at random had failed in both the examination?

(A) 1/5 (B) 1/7 (C) 5/7 (D) 5/6

Reply Like? Yes (1) | No (2)

(2 years ago)

Number of passed only in 1st = 60-30 = 30
Number of passed only in 2nd = 50-30 = 20
Total passed atleast in one exam = 30 + 20 + 30 = 80
Total failed in both = 100 - 80 = 20
Therefore required probability = 20/100 = 1/5

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(2 years ago)

Both failed =100-(60+50-30)=20
Probability=20/100=1/5

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(2 years ago) "Other"

How many of the first 1200 natural numbers are either prime to 6 or to 15?

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(2 years ago) "Other"

Two friends decide

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(2 years ago)

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.
How many miles does the pigeon travel

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(2 years ago)

Ans: 54 miles

Let two friends are A and B, who lives 36 miles apart.
Case-I (Pigeon first flies from B towards A)
Relative speed of Pigeon and A = 18+6 = 24 mph. Time of meeting Pigeon and A=36/24=3/2 hr.
In time 3/2 hrs, distance traveled by A & B=2*6*3/2=18 miles, Remaining distance=36-18=18 miles.
Case-II (Pigeon then flies from A towards B)
Relative speed of Pigeon and B = 18+6 = 24 mph. Time of meeting Pigeon and B=18/24=3/4 hr.
In time 3/4 hrs, distance traveled by A & B=2*6*3/4=9 miles, Remaining distance=18-9=9 miles.
Case-III (Pigeon first flies from B towards A)
Relative speed of Pigeon and A = 18+6 = 24 mph. Time of meeting Pigeon and A=9/24=3/8 hr.
In time 3/8 hrs, distance traveled by A & B=2*6*3/8=9/2 miles, Remaining distance=9 - 9/2=9/2 miles.
Case-IV (Pigeon then flies from A towards B)
Relative speed of Pigeon and B = 18+6 = 24 mph. Time of meeting Pigeon and B=(9/2)/24=3/16 hr.
In time 3/16 hrs, distance traveled by A & B=2*6*3/16=9/4 miles, Remaining distance=(9/2)-(9/4)=9/4 miles.

Thus Pigeon we fly between A and B, for 3/2, 3/4, 3/8, 3/16, ..... hrs (which forms series) until both the friends meets. Therefore total distance traveled by Pigeon=18*(3/2 + 3/4 + 3/8 + 3/16 + ......)=18*3*(~1)=54 miles.

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(2 years ago) "Other"

There are 50 employees in a Max. Mink Co. The salaries of 15 of them were each decreased by 10%, and the salary of the rest were each decreased by 5%. Find the percentage decrease in the total salary of the employees.

Reply Like? Yes (8) | No (2)

(2 years ago)

Let initial salary of each employee be 1.
Total decrease in salary = 50 - [(15*0.9) + (35*0.95)] = 3.25
% Decrease in total salary = (3.25/50)*100 = 6.5%

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(2 years ago)

Let ₹100 is the salary of each
15 persons decrease by 10%=> salary =₹90
35 persons salary decreased by 5%=> salary =₹95
Total salary =15*90+35*95=₹1350+₹3325
=₹4675
Less by₹325=>%of less =(325/5000)100
325/50=13/2=>6.5%

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to (2 years ago) "Other"

Hi mam , How are you

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(2 years ago) "Other"

https://www.hghvallartaclinic.com/growth-hormones-for-kids/

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(2 years ago) "Other"

HGHvallarta clinic is a highly experienced professional organization that cares about your child’s well-being, about your personal success and achievements in both career and leisure and about your quality of life as you age. Authentic, flexible, and responsive to our customers' needs we deliver only the highest quality of service and products to demonstrate that we care.

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(2 years ago) "Other"

If TO + NO = TOO, find the value of O.

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(2 years ago)

O=0

10
+90
-------
100

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(2 years ago) "Other"

The proportion of alcohol and water in 3 samples is 3:5, 2:3 and 1:4. A mixture comprising of equal quantities of all three samples is made. The proportion of alcohol and water in the mixture is

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(2 years ago)

Proportion of alcohol in 3 samples is 3/8, 2/5, 1/5 or 15/40, 16/40, 8/40 respectively
Proportion of water in 3 samples is 5/8, 3/5, 4/5 or 25/40, 24/40, 32/40 respectively
So, when equal quantity of all samples is taken, ratio of alcohol & water = (15+16+8) : (25+24+32) = 39 : 81 = 13 : 27

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(2 years ago) "Other"

1. A sample poll of 200 voters revealed the following information concerning three candidates A,B and C of a certain party who were running for three different offices.

28 in favour of both A and B, 42 in favour of B not A or C, 98 in favour of AorB but not C, 122 in favour of B or C but not A, 64 in favour of C but not A or B, 14 in favour of A and C but not B.

How many of the voters were in favour of all the three candidates?

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(2 years ago) "Other"

https://www.fieldengineer.com/sd-wan/what-is-sd-wan

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(2 years ago) "Other"

visit us @ https://www.fieldengineer.com/sd-wan/what-is-sd-wan

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(2 years ago) "Other"

https://www.fieldengineer.com/sd-wan/what-is-sd-wan

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(2 years ago) "Other"

I was born in a century in which the last year of the previous century was a leap year. I was born in the first year after the first leap year of the century. I was born after 1200 A.D. and before 2000 A.D. What is the year of my birth?

Pls Solve

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(2 years ago)

Between year 1200 and 2000, leap century year will be 1600 (Century divisible by 400)
First leap year after 1600 is 1604.
So year of birth is 1 year after 1604 i. e. 1605.

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(2 years ago) "Other"

Pls.can anyone send me
Python programming sample paper of class ix with solutions on mail
ishitjainitcreator@gmail.com

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(2 years ago) "Other"

0 6 6 20 20 42 ??????

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(2 years ago)

first term = 0*1 =0
second term 1*0 =0
third term: 2*3 =6
fourth term: 3*2 = 6
fifth term: 4*5 =20
sixth term : 5*4 =20
seventh term 6*7 = 42
Eight term 7*6 = 42
Nineth term 8*9 = 72
tenth term 9*8 = 72

hence correct answer is 72

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(2 years ago) "Other"

4. Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 0 mins. If all of them work together, find the

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(2 years ago) "Other"

. A vessel contains mixture of milk and water in the ratio of 7:1 respectively. 24 liters mixture
is removed from the vessel and if the quantity of remaining milk in the vessel is 56 liters, then find
quantity of water in the vessel initially.

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(2 years ago)

Ans: 11 liters

Let, initial mixture contains milk=7x and water=x
Then, quantity of remaining milk after removing 24 liters of mixture=7x - 24*(7/8)=56
56x - 168 = 448
x = 11
.'. Quantity of water in initial mixture = x = 11 liters.

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(2 years ago)

Very simple 11lts.
After removing 24 lts the mixture is in the same ratio
Milk:water=7:1=56:w=>w=56*1/8=8lts
In 24 lts removed mixture=24*1/8=3lts.
So total water is 11 ltd.

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(2 years ago) "Other"

If stands for /, / stands for -, + stands for. -stands for +.

Then 9/15*9+2

9=?

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(2 years ago) "Other"

8700 अरब के बीज की स्थिति में है
"नगद 15, 9/8, 6/16, n/20"
19वां दिन चुकाने पर भुगतान की स्थिति होगी

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(2 years ago) "Other"

The average weight of A,B and C is 65kg,if the person D joins them the the average weights of those four persons becomes 70kg, the average weight of B,C and D is 75 kg then the weight of A is (in kgs)

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(2 years ago)

A+B+C=3x65=195 ---(i)
A+B+C+D=4x70=280 ---(ii)
Eqn (ii) - (i), D=85
Also, B+C+D=3x75=225 => B+C=140 ---(iii)
Eqn (i) - (iii), A=55
Therefore, weight of A=55 Kg.

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(2 years ago)

Average of A,B,C,D=70Kg
Sum of A+B+C+D=280Kg
Average of B,C,D=75Kg
Sum of B+C+D=225Kg
A's Weight=280-225=55Kg

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(2 years ago) "Other"

A person sold an article for 1840 Rs. And profit incurred will be 12.5% more than the loss incurred when article is sold for 1500 rs. At what price it should be sell to get 20% profit?

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(2 years ago)

Ans: Rs. 1992

Let CP=Rs. x, then Profit when SP is 1840 = (112.5/100)*Loss when SP is 1500
(1840-x) = (112.5/100)*(x-1500)
184000 - 100x = 112.5x - 168750
Solving, we get x = 1660
So, SP when profit is 20% = 1660*(120/100) = 1992 Rs.

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(2 years ago) "Other"

Fifty students have signed up for at least one of the courses German and
English. How many of the 50 students are taking German but not English

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(2 years ago) "Other"

There is a splendid fountain in the heart of Paris Tourists throw coins into the fountain in the belief that their wishes would come true. At the end of each day, a group of urchins jump into the water and pick up the coins. It is a tradition that they share the amount equally On Friday, had 5 urchins not shown up due to rain, each of those present would have received a Euro more But had it been a sunny day and there had been 15 more urchins, each would have received 2 Euros less, Find the total number of Euros in the fountain on Friday

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(2 years ago)

Let x urchins gets y Euros each, when all urchins are present, then total Euros=x*y
As per given conditions, (x-5)*(y+1)=xy ⇒ x-5y=5 ---(i) and
(x+15)*(y-2)=xy ⇒ -2x+15y=30 ---(ii)
Solving above equations, we get x=45, y=8
Therefore, total number of Euros=45*8=360

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(2 years ago) "Other"

what is the odd number is 812,394,192,90,40,16,5

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(2 years ago) "Other"

https://m4maths.com/35221-What-is-the-output-of-the-following-program-void-main-int-i-2-j-3-k-l-float-a-b.html

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(2 years ago) "Other"

If the sum of the first 43 terms of an arithmetic progression is 2967, then find the sum of the 11th and the 33rd terms of the same series.

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(2 years ago)

S43=43(2a+42d)/2[through formulaSn=n{2a+(n-1)d}/2]
So S43=43(2a+42d)/2=2967
Now T11=a+10d
T33=a+32d
T11+T33=2a+42d=2967*2/43
=138

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(2 years ago)

Ans: 138

For A.P. series, here n=43, S=2967. If First term=a, Difference=d, then sum of an A.P. series S=(n/2)[2a + (n-1)d]
2967 = (43/2)(2a + 42d)
69 = a + 21d ---- (i)
Sum of 11th term and 33rd term = (a + 10d) + (a + 32d) = 2a + 42d = 2 x (a + 21d) = 2 x 69 = 138

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(2 years ago) "Other"

bank advertises that you can double the money if you invest it with them for 8 years, what is the rate of Interest offered by them?

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(2 years ago)

Money doubles in 8 years => Interest earned is equal to principal
Let Principal=P, Rate=R %, then P*R*8/100 = P
R = 100/8 = 12.5%

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(2 years ago)

8*R**P/100=P
R=100/8=12.5%

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(2 years ago) "Other"

Two people are playing with a pair of dies. Instead of numbers, the dies have different colors on
their sides. The first person wins if the same color appears on both the dies and the second
person wins if the colors are different. The odds of their winning are equal. If the first dice has 5
red sides and 1 blue side, find the color(s) on the second one.

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(2 years ago)

3 blue side and 3 red sides then
probability for different colors= 1.3/36+5.3/36=1/2
probability for same colors= 1.3/36+5.3/36=1/2

Like? Yes | No

(2 years ago) "Other"

Hanson Bhaskar have salaries that jointly amount to 10000 per month they spend the same amount monthly and then it is found that the ratio of their savings is 621 which of the following can be considered salary

Reply Like? Yes | No

(3 years ago) "Other"

When processing flower-nectar into honeybees’ extract, a considerable amount of water gets reduced. How much flower-nectar must be processed to yield 1kg of honey, if nectar contains 50% water and the honey obtained from this nectar contains 15% water?

Reply Like? Yes (2) | No

(3 years ago) "Other"

If you place 9 at the left end of a five-digit number you will get a six-digit number. This six-digit number is four-times
the six-digit number that you get when you put 9 at the right end of the original five-digit number. What is the sum of
the digits of the five-digit number?

Reply Like? Yes | No (1)

(3 years ago)

Sum of their digits is 18

Like? Yes | No

(3 years ago)

G.S.Kantharao 28 Seconds ago
[G.S.Kantharao]
Your number is 23076.
If you place 9 on left side=923076
If you place 9 on right side =230769
923076=4*230769.
Sum of their digits is 2+3+0+7+6=18

Like? Yes (2) | No

(3 years ago) "Other"

I am Prashant Yadav

Reply Like? Yes (1) | No

(3 years ago) "Other"

How to select TCS guide me

Reply Like? Yes | No

(3 years ago) "Other"

For puzzle dated 22.11.2021, I have given answera as option 8 which is displayed correctly in home page.
But -1 points are given. please check.

I think other members may be getting same response .

Reply Like? Yes | No (1)

(3 years ago) "Other"

Sunil completes a work in 4 days whereas Dinesh completes the work in 6 days.Ramesh works 1(1)/(2) times as fast as Sunil.How many days it will take for the three together to complete the work?

Reply Like? Yes | No

(3 years ago)

24/19 days

1 day work of Sunil=1/4, Dinesh=1/6 and Ramesh=(3/2)*(1/4)=3/8
In 1 day, together all 3 can complete 1/4 + 1/6 + 3/8 = 19/24
So, the work will be completed in 24/19 or 1 (5/19) days.

Like? Yes | No

(3 years ago) "Other"

chairis code as hcari, then shame is code as

Reply Like? Yes | No

(3 years ago) "Other"

Dashin bank all choth

Reply Like? Yes | No

(3 years ago) "Other"

Dashim bank 1 ermja kedami

Reply Like? Yes | No

(3 years ago) "Other"

The number of 5-digit odd numbers that can be made from number 12345 are

Reply Like? Yes | No

(3 years ago)

To get odd numbers, digit at unit place must be 1, 3 or 5.
When 1 is at unit place, total 5 digit numbers = 4 x 3 x 2 = 24
When 3 is at unit place, total 5 digit numbers = 4 x 3 x 2 = 24
Similarly, for 5 at unit place, total 5 digit numbers = 4 x 3 x 2 = 24
Therefore, Total 5-digit odd numbers = 24 + 24 + 24 = 72

Like? Yes | No

(3 years ago)

Total 5-digited numbers=5!=120
Numbers which ends with 2 or 4=2*4!=48
Number of odds formed =120-48=72

Like? Yes (4) | No

(3 years ago) "Other"

I wish this the best platform for growing skills up

Reply Like? Yes (1) | No

(3 years ago) "Other"

main()
{
char s[ ]="man";
int i;
for(i=0;s[ i ];i++)
printf("n%c%c%c%c",s[ i ],*(s+i),*(i+s),i[s]);

Reply Like? Yes | No

(3 years ago) "Other"

What is the similarity between the following pairs?
1. 12 & 21
2. 13 & 31
3. 102 & 201

Reply Like? Yes | No (2)

(3 years ago)

12 reverse order 21
13 reverse order 31
102 reverse order 201

Like? Yes (3) | No (1)

(2 years ago)

pallindrom numbers

Like? Yes | No

(3 years ago) "Other"

one of the value of x in log(x+7)(36x+9)=2

Reply Like? Yes | No

(3 years ago) "Other"

University of Vikram has enrolled nine Phd candidates.Babu Chitra,Dheeraj , Eesha,Farooq,Gowri , Hameed,Iqbal,Jacob.
-Farooq and Iqbal were enrolled on the same day as each other, and no one else was enrolled that day.
-Chitra and gowri were enrolled on the same day as each other, and no one else was enrolled that day.
-On each of the other days of hiring , exactly one candidate was enrolled.
-Eesha was enrolled before Babu.
-Hameed was enrolled before Dheeraj
-Dheeraj was enrolled after Iqbal but before Eesha
- Gowri was enrolled after both Jacob and Babu
-Babu was enrolled before Jacob
Who were the last two candidates to be enrolled?

Reply Like? Yes (1) | No

(3 years ago) "Other"

I just like MATH.

Reply Like? Yes | No

to (3 years ago) "Other"

If WAIT + ALL = GIFTS; Then what is the value of G+I+F+T? (If A =6 & S=5)

Reply Like? Yes | No

(3 years ago)

9 6 0 8
+ 6 7 7
---------
10285
=> W=9, A=6, I=0, T=8, L=7, S=5, G=1, F=2, T=8
So, G+I+F+T=1+0+2+8=11

Like? Yes | No

(3 years ago) "Other"

Amcat preparations papers

Reply Like? Yes | No (1)

(3 years ago) "Other"

5, 12, 28.8, 69.12, 165.88, 398.13, ? , 2293.23.
Find the missing number

Reply Like? Yes (2) | No

(3 years ago)

Answer : 955.512

Like? Yes (1) | No

(3 years ago)

398.13 x 2.4= 955.512

Like? Yes | No

(3 years ago)

5,12,28.8,69.12,165.88,398.13,?,2293.33
The series is in G.P
5,5(2.4),5(2.4^2),5(2.4^3),......
Now the 7th term=ar^(7-1)
=5*2.4^6=955.512

Like? Yes (3) | No

(3 years ago) "Other"

New Public School has a circular layout. The school has teachers specializing in various subjects. All

classrooms of the school are equally spaced apart and located along its perimeter. Each teacher needs

to take 4 classes in a day. There is a strange rule. The first and last class has to be in the same class

roun. The other two classes have to be at two other distinct class rooms.

Ram is a math teacher. He never teaches two successive classes at two adjacent classrooms. How many distinct trips to class rooms are possible for Ram if there are 9 class rooms in the school?

Reply Like? Yes | No

(3 years ago)

In a day
First & last room should be same
Let's choose it arbitrarily, next class can be chosen in 6 ways
Because same room cannot be chosen & neighboring rooms are also not allowed
Round represntations of class: 1 2 3 4 5 6 7 8 9. 1....

Let first one be 1
Then second can be 3 4 5 6 7 8
For 3, third class can be any of 5 6 7 8
For 4, third class can be any of 2 6 7 8 9
For 5, third class can be any of 2 3 7 8 9
For 6, third class can be any of 2 3 4 8 9
For 7, third class can be any of 2 3 4 5 9
For 8, third class can be any of 2 3 4 5 6
For 9, third class can be any of 2 3 4 5 6 7
And fourth class will be again 1

So total possible classes keeping first class constant is: (4)+(5*5)+(6) = 35

Similarly first class can be changed in 9 ways => Total possible trips per day = 9*35 = 315

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to (3 years ago) "Other"

sir please guide me how to solve

Reply Like? Yes | No (1)

(3 years ago) "Other"

Please check puzzle dated 14.06.2021

If the capacity of a cylindrical tank is 4004 m^3 and the diameter of its base is 14 m, then find the depth of the tank?

Solution given is
Let the depth of the tank be h meter
πr²h = 4004
h = 4004/ πr²
h = (4004 x 7/22 x 1/14)
h = 91 m.

I think admin has considered 2r =14 only in place of r^2 ( 7^2).

It should be

Let the depth of the tank be h meter
πr²h = 4004
h = 4004/ πr²
h = (4004 x 7/22 x 1/49)
h = 26 m.

Please check and do justice to maths.

Reply Like? Yes (1) | No (2)

(3 years ago) "Other"

Identify which security threat can occur because of typing error on the network site

Reply Like? Yes (1) | No

(3 years ago)

Typosquatting attack

Like? Yes (1) | No

(3 years ago) "Other"

Amansells12candiesforRs.12&losesRs.2.40.Ifhesells12candiesforRs.16,howmuch
doeshegainorlose?
a.GainsRs.4
b.LosesRs.6
c.GainsRs.6.40
d.LosesRs.1.60
e.GainsRs.1.60

Reply Like? Yes | No

(3 years ago)

For 12 candies, when SP=Rs 12, Loss is Rs 2.4 , So CP=12+2.4=Rs 14.4
Hence Gain, when he sells 12 candies for Rs 16 = SP - CP = 16 - 14.4 =Rs 1.6
Option e)

Like? Yes (1) | No

(3 years ago) "Other"

f I sell two articles, one at 20% profit for Rs.100 and the other at 20% loss for Rs.100, what is my net profit/loss?

Reply Like? Yes | No

(3 years ago)

CP = 83.33+125 = Rs. 208.33
Loss = Rs. 8.33

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(3 years ago) "Other"

Dear Admin,
Is there any chance of fair evaluation of scores or results are pre-decided to give prizes to a few privileged members ?

Reply Like? Yes (3) | No (2)

(3 years ago)

No chance. I think Admin team is working from home. :)

Like? Yes (3) | No

(3 years ago) "Other"

In today's puzzle dated 5-5-21, I have answered option 5 as answer which is shown as 5 in my home page of m4maths. But marks given are -1 .
Please check.

Reply Like? Yes (4) | No (2)

(3 years ago) "Other"

With 4/5 Full Tank

Reply Like? Yes | No

(3 years ago) "Other"

In today's puzzle dated 5-5-21, I have answered option 5 as answer which is shown as 5 in my home page of m4maths. But marks given are -1 .
Please check.

Reply Like? Yes (3) | No (1)

(3 years ago)

If admin is not ready to check and take corrective action for yesterday puzzle , it is better to stay away from today's puzzle as a mark of protest.

Like? Yes (1) | No (3)

(3 years ago) "Other"

20 people going to one temple,they want rs 20.for men rs 3,women rs 2,children 50 paisa,how much money spent for men,women,children?

Reply Like? Yes | No

(3 years ago)

Let men,Women are =x,y respectively
Then children are =(20-x-y)
Then amount=
3x+2y+(20-x-y)/2=20
6x+4y-x-y=20
5x+3y=20
For the Natural Numbers N (x,y)=(1,5)
So men =1
Women =5
Children =14
Expenditure=1*3+5*2+14*0.5=20

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