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krishna

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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

Mathematics is KING of ARTS and QUEEN of SCIENCE...

My_Teacher

Placed User Comments

M4Math helped me a lot.

Vipul Chavan 6 Months ago

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

yash mittal 1 year ago

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(18 Days ago) "Other"

Long ago a princess wanted

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(26 Days ago) "Other"

during a period of decline in a stock market prices a stock sold at ₹50/share on the first day,₹40/share on the second day and ₹25 on the third day.If a invester bought 100,120&180 shares on the respective 3 days the average price paid per share will be?.

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(4 Days ago)

Avg. Price = (100*50 + 120*40 + 180*25) / (100+120+180) = 35.75

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(28 Days ago) "Other"

Help me to get score in tcs nqt 2021

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(1 Month ago) "Other"

On Feb 18 I have TCS NQT can some one help me friends

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(1 Month ago) "Other"

A man sets out by cycle from Delhi to Rohtak, and at the same time another man starts from Rohtak by cycle to Delhi. After passing each other they complete their journeys in 3 1/3and 4 4/5 hours respectively. At what rates does the second
man cycle if the first cycles at 8 km per hour?

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(1 Month ago)

Let A and B are the persons.
A travelled x km,B travelled y km before they meet.
Time taken for A and B to reach their destinations are 10/3h,24/5h
Speeds are y/(10/3),x/(24/5)
At the time they meet they travelled same time => x/(3y/10)=y/5x/24)
10x/3y = 24y/5x=>50x^2=72y^2
=>x^2/y^2=72/50
x/y=√(1.44)=1.2
=>x=1.2y
Total distance =(x+y)=(x+x/1.2)=2.2x/1.2=11x/6
Now time taken for B=(11x/6)/(5x/24)
=11*24/6*5=44/5=8h 48m

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(1 Month ago) "Other"

ORDER RESEARCH CHEMICALS FROM https://www.highgradeschemicals.com/

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

(1 Month 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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(1 Month ago)

First term = a, Number of terms=n, Difference = d
nth term = a+(n-1)d
11th term = a+10d, 33rd term = a+32d
Sum of 11th & 33rd= 2a+42d = 2(a+21d)=2(22nd term)

Middle term = Total sum/n
43/2 th term = 22nd term = 2967/43 = 69

=>Sum of 11th & 33rd = 2(69) = 138

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(18 Days ago)

Sum of first 43 terms in A.P=43(2a+42d)/2=2967
11th term +33rd terms =(a+10d)+(a+32d)=(2a+42d)
43(2a+42d)/2=2967=>(2a+42d)=2967*2/43=138

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(1 Month ago) "Other"

solution of quastion

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(2 Months ago) "Other"

Keshav runs a factory of 210 employes in each 3 shift 80 emp are required no one is allowed to work more than 16 hrsin a day how many emp are required to work 16 hrs in a day

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(2 Months ago)

80*3 = 240 employees needed
We have 210
So 240-210 = 30 employees need to work double shift
Cross check: 180*8+30*16=1920 hours
240*8 = 1920 hours
So 30 is the answer

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(2 Months ago) "Other"

We know that the vertices of a quadrilateralare 2, 3, 5, and 6 cm, respectively,from a point P. What is the largest possible area of this quadrilateral?

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(2 Months ago)

Lets divide the area into 4 triangles
Area of triangle = 1/2 * base * height
So total area for right angle triangles are:
0.5*(2*3+3*5+5*6+6*2) = 31.5cm^2
If we diminish or expand any of the portions we eventually fall into same bucket I guess, so I think 31.5cm^2 should be the answer, all suggestions are welcome. Thanks.

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(2 Months ago) "Other"

give me apportunity

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(2 Months ago)

What exactly apportunity means? Can you be more specific?

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(2 Months ago) "Other"

Twenty five sets of problems on Data Interpretation– one each for the DI sections of 25
CATALYST tests were prepared by the AMS research team. The DI section of each CATALYST
contained 50 questions of which exactly 35 questions were unique, i.e. they had not been used in
the DI section of any of the other 24 CATALYSTs. What could be the maximum possible number
of questions prepared for the DI sections of all the 25 CATALYSTs put together?
(Can anyone help by explaining the solution to this question)

Reply Like? Yes | No

(2 Months ago)

Let me try to understand the question:
25 set of papers
50 in each with 35 distinct questions
Did I understand the question correctly?

If yes, the answer is: 35*25 = 875 questions.

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(3 Months ago) "Other"

Why 0!=1 ?
Please help me

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(2 Months ago)

n! = n*(n-1)!
1! = 1*(1-1)!
1! = 1*0!
As 1! = 1, hence 0! = 1

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(2 Months ago)

We know that n! = n(n-1)(n-2)(n-3).....3(2)(1) which means that
n! = n(n-1)!
Dividing both sides of the equation by n, we have
(n - 1)! = n!/n
Using this fact, we can check the following pattern.
4! = 5!/5 = {(5)(4)(3)(2)(1)}/5 = 24
3! = 4!/4 = {(4)(3)(2)(1)}/4 = 6
2! = 3!/3 = {(3)(2)(1)}/3 = 2
1! = 2!/2 = {(2)(1)}/2=1

Now, we go to 0!
0! = 1!/1 = 1

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(3 Months ago) "Other"

Like and subscribe my Youtube channel
Asif Iqbal
Maths class 10th and 9th Lectures
https://youtu.be/s7qPmsPs5bA

Reply Like? Yes (1) | No

(3 Months ago) "Other"

Ten years ago,the average of family of four members was 24 years.Three children having been born,the average age of family is same today.What are the present ages of children if two children are identically twins and differ by two years from the younger one?

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(3 Months ago)

24×4 =96 + 4×10 = 136
current age = 24×7 = 168
hence children age = 32
2A + A - 2 = 32
A = 34/3 = 11.33 not possible
data is wrong as child can not be older than 10 years

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(3 Months ago) "Other"

hi ,my self Ritik Rathore want to place in a core organisation of civil engineering and groom my self .

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(4 Months ago) "Other"

Hi, my name is Alister james lives in Delhi and doing my education in creativethinksmedia want to become an engineer.

Reply Like? Yes (1) | No

(4 Months ago) "Other"

hello my name in vuresakunthala iam teacher in private school now free because corona holidays now i need job at home any on help me thq

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(4 Months ago) "Other"

here are 20 balls which are red, blue or green. If 7 balls are green and the sum of red balls and green balls is less than 13, at most how many red balls are there?

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(3 Months ago)

7 balls are green
sum of red balls and green balls is less than 13
7 + R < 13
=> R < 6
Hence at most 5 red balls are there

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(4 Months ago) "Other"

if the tank is half fulled and set X and set Y are closed how many minutes will it take for set Z to empty the tank if alternate taps of set Z are closed

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(3 Months ago)

X, Y & Z details missing

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(4 Months ago) "Other"

The number of 5-digit numbers that can be formed from 4,2,0,7 and 3

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(4 Months ago)

5! is the answer

Like? Yes | No (2)

(4 Months ago)

4*5*5*5*5 bcoz 0 cant be at first place

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(3 Months ago)

Assuming repetition allowed - 1st Digit can be in 4 ways - Rest 4 can be in ways Hence 4*5*5*5*5 = 2500
Assuming repetition mot allowed = 4*4! = 4 * 24 = 96

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(4 Months ago) "Other"

What is the referral code

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(4 Months ago) "Other"

please help me in tcs nqt 2021

Reply Like? Yes (2) | No

(4 Months ago) "Other"

got placed in infosys

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(5 Months ago) "Other"

Three marketers distribute their products in a colony for pilot testing. Marketer A distributes
150 Items to the people equally and then was left with a few items. Marketer B distributes 270
Items to the people equally and then was left with the same number of Items as the number left
with Marketer A. Marketer C distributes 320 items to the people and is left with the same
number of items as the number left with Marketer A. What is the maximum possible number of
people in the colony?

Reply Like? Yes (1) | No

(5 Months ago)

Let q are the no of people
150=aq+r----(1)
270=bq+r----(2)
320=cq+r-----(3)
Eqn. 2 -1=q(b-a)=120
Eqn.3-2=q(c-b)=50
Eqn.3-1=q(c-a)=170
H.c.f of all these is 10
Hence the members are 10.

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(5 Months ago) "Other"

A ball is dropped from a height of 144 m and it rebounds to two thirds of the height from which it falls. if it continues to rebound, what distance will the ball have travelled before coming to rest?

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to (5 Months ago) "Other"

hey surbhi
how u get placed

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

to (5 Months ago) "Other"

oh gosh,
are u placed in the company?
if not leave it.
and if yes then please let me know how u get placed?

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(5 Months ago) "Other"

2 7 19 62 493...next no?

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(5 Months ago) "Other"

Important Math questions and it's solutions.

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(5 Months ago) "Other"

How would you dynamically allocate a one-dimensional and
two-dimensional array of integers?

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(5 Months ago)

Use loops to iterate through array
And use available random generator functions to allocate any value, dynamically if you are getting values from any where that will work.
Please give more information if you are looking for anything else.

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(5 Months ago) "Other"

Adarsh is preparing for a competitive exam. During his practice for the same, he comes across a sample paper which contains 12 yes/no type questions and 12 multiple choice questions, each with four possible answers. In how many distinct ways can Ankit solve the paper?

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(5 Months ago)

244,672,066 ways
Yesno can be answered in 3 ways -> YesNoNone
Similarly MCQ can be answered in 5 ways
= (3^12)+(5^12)

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(3 Months ago)

@varun - both need to be multiplied rather than addition.

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to (5 Months ago) "Other"

Can please share any resource to learn quantitative aptitude or anything regarding maths please, I want to learn

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(5 Months ago)

We can find many question and answers in the website by browsing, example at: https://m4maths.com/placement-puzzles.php?SOURCE=maths
You can try to solve the unsolved one as well which helps in learning

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(6 Months ago) "Other"

Which of the following statements is/are true about locks in database management’?
1. Livelock and Deadlock are same.
2. Phase Locking has 2 stages namely- Expanding phase and Contracting phase.
3. Read Lock can be assigned to inﬁnite transactions simultaneously.

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to (6 Months ago) "Other"

hi mam i had doudt about probability that sum of two dice are thrown, but sum o two dice are divisble by 4 and 6..i know the answewr is 7/18..
i need the clear explanation, means in a logical way
by adding all the sequence i get 16/36 means 8/18
sum of them are 1,3 /3,1/2,2/ and 1,5/2,4/3,3/4,2/5,1/4 and
these are the only combination i get 4 and 6 by adding of two dice
explain me in soon at email rahimkhan341341@gmail.comeven u
thnaking you.. not only her even u can also share the answer at email..

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(6 Months ago) "Other"

consider expression (3+x+x^2x^3x^4)^4=p0+P1x+p2x^2+.....P16x^16. Find value of p0+p1+p15+p16

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(6 Months ago) "Other"

find the grammatical error i was so surprised that(b) i told me i was imagining things (c) but later others confirmed that they too had seen the same sight

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(6 Months ago)

I said I was imagining things

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(6 Months ago) "Other"

In how many ways one or more than one fruit, can be selected from 6 varieties of fruits given that there are 5 fruits of each variety?

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(6 Months ago)

(1) Lets just first select from 1 variety,
In 5 ways one or more of same variety can be picked {1,2,3,4,5}
We have 6 such varieties

(2) Now lets go to second variety,
Additionally,
Picking from second variety can be done in 6 ways including picking zero {0,1,2,3,4,5,6}
And we have 5 such extra varieties
= 5*6*6*5 = 900

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(6 Months ago) "Other"

Two articles A and B, with the same marked price were sold at 15% and 12% discounts respectively. Percentage of the profit earned on articles A and B was 6.25% and 20% respectively. The cost price of article B was Rs.160 less than the cost price of article A. Find the marked price of the each article.

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(6 Months ago)

Let the CP of A=x+160 and B=x. Marked Price of A and B=P.
Then, SP of A = P*85/100 = (106.25/100)* (x+160) ---> 17P = (x+160)*21.25 ---(i)
SP of B = P*88/100 = (120/100)*x ---> 11P = 15x ---(ii)
Solving (i) & (ii), we get Marked Price = P=2400 and CP of B=x=1760, CP of A=(x+160)=1920

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(6 Months ago) "Other"

how many three digits numbers can be formed using 2,3,4and5 with digits being repeated?

Reply Like? Yes (2) | No

(6 Months ago)

Unit place has a choice of 4 numbers
Similarly tens,hundredth place has a choice of 4 numbers each
= 4*4*4 = 64

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(7 Months ago) "Other"

3) What will be the output of the following pseudocode?
For input a = 8 & b = 9.
Function(input a, input b)
If(a < b)
return function(b, a)
elseif(b != 0)
return (a + function(a,b-1))
else
return 0

a) 56
b) 78
c) 72
d) 68

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(7 Months ago)

The answer is option (c) , i.e , 72

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(7 Months ago) "Other"

Hi, looking for feedback regarding the following question:
There are 500 candies. If 350 have sprinkles and 300 have chocolate chips, and at least 60 have neither sprinkles nor chocolate chips, the number of candies that have both is in this range:
a)40 and 120
b)80 and 180
c)180 and 320
d)210 and 300
e)300 and 350
This question is from this site and I've also placed my reasoning/solution for it.
Any help will be most appreciated.
Joy

Reply Like? Yes | No

(7 Months ago)

It is 210 and 300
Total candies 500
Out of these candies with both maximum is 300. Since chocklet chips is subset to sprinkles.
60 is neither of them. So either of them are 500-60=440
Now minimum =350+300-440=210
So it will be 210 and 300

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(7 Months ago) "Other"

Today is my first day on this site. and I m very excited about learning and also join this site. I hope I do really well and got a placement.

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(7 Months ago) "Other"

In how many ways can a team of 5 persons be formed out of a total of 10 persons such that 1. Two particular persons should be included in each team? If any team?
2. two particular persons should not be included in any team? If each team?

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(7 Months ago)

1.8C3=56
2.8C5=56

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(7 Months ago) "Other"

Salaams:
My work for us here as first timer is. Permutation and Combination.
Permutate and Combine the numbers below into 7 groups you can, viz;
7539162 Good luck!

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(7 Months ago) "Other"

At the end of the day all the animals, birds, insects receive their daily allowance. If the eagle 🦅got £45, the spider 🕷 earned £71, a bee 🐝 was given £27. How much money would a kangaroo 🦘get?

Reply Like? Yes | No (1)

(7 Months ago) "Other"

Solve the following question based on the information provided:
i.Six students A, B, C, D, E and F participated in a self-evaluation test of Quants and Data Interpretation (D.I).
ii.The total marks of A in Quants was just above C and in D.I. just above F.
iii.B was just above C in D.I. but he scored less than D in Quants.
iv.F got more marks than D and E in D.I. but did not perform as well in Quants as in D.I. as compared to D and E.
v.No one is in between C and D in Quant and C and A in D.I.
Which of the given statements is not necessary to answer the questions?

A)(ii)
B)(iii)
C)(iv)
D)All are necessary

Reply Like? Yes | No

(8 Months ago) "Other"

whatsapp@ +27638104141 love spells in Málaga,Sevilla,Barcelona,Madrid,Valencia,Calgary,Edmonton,Vancouver,Winnipeg,Ottawa,Toronto,Montreal

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(8 Months ago) "Other"

hey, there I am Soumen Pal, pursuing my master's degree from Visvabharati University in social science. Is there any platform for me in the government sector?

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(8 Months ago) "Other"

Dear Admin,
Please give proper data while making a daily puzzle. ( refer Today's puzzle dated 06.07.2020)
Is it possible to have age difference of 9 years only between daughter and mother?
One year ago, there ages were 3 years and 12 years.
Please ....................

Reply Like? Yes (1) | No

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