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Dimple

India

Punjab

Time: 00:01:33

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Maths Quotes

Go down deep enough into anything and you will find mathematics.

Dean Schlicter

Learn mathematics better and solve your own problems.

K. Anandakumar

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

Public Wall |

to (6 years ago) "Other"

hii,,,,TCS is coming to my college (2nd sep 2018) ,so will you please mail me all the TCS question papers , sabithanagendhran@gmail.com

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

to (6 years ago) "Other"

hii,karthikeyan TCS is coming to my college (2nd sep 2018) ,so will you please mail me all the TCS question papers , sabithanagendhran@gmail.com

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(6 years ago)

no
.....................................

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(6 years ago) "Other"

the number of digits in the smallest positive integer which is composed entirely of fives that is divisible by 99 is

Reply Like? Yes (4) | No

(6 years ago)

the number of digits in the smallest positive integer which is composed entirely of fives that is divisible by 99 is 18.

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(6 years ago) "Other"

There are three cities a b and c. two ways to reach c from a or b. shortest distance from a to b is 66 km. shortest distance from b to c is 45 km. shortest distance from a to c is 50 km. there is another city called p. shortest distance from p to a is 180 km. shortest distance from p to b is 200 km. find the shortest distance between p to c.
.
.
.
ANSWER FOR THIS?
My answer is 245... is it correct...?

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(6 years ago)

my answer is 146 waiting for correct answer

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(6 years ago) "Other"

If n is a positive integer, let s(n) denote the integer obtained by removing the last digit of n and placing it in front. For example, s(731) = 173. What is the smallest positive integer n ending in 6 satisfying s(n) = 4n?

Reply Like? Yes (12) | No

(6 years ago)

153846
as 153846*4= 615384
s(153846) = 615384

Like? Yes (1) | No (4)

(6 years ago)

How did you get the answer as 153846?? can you please explain??

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(6 years ago)

@DIPIN sir explain more

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(6 years ago)

Please note that last digit is given as 6.
Multiply it by 4 , we get 24.
It means digit at unit place for new number ( after placing unit digit at front place of original number ) is 4 and hence 4 will be at tens place of original number.
Multiply 4 with 4 , we get 16 and add 2 ( carry from first product) to get 18. So 8 is next digit.
Repeat this process till we get 6 in final number (product).

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(6 years ago) "Other"

5. A completes a work in 20 days B in 60 days C in 45 days. All three persons working together on a project got a profit of Rs.26000 what is the profit of B?

Reply Like? Yes | No

(6 years ago)

profit is to be distributed in the ratio of
1/20 : 1/60 : 1/45
or
9:3:4
Profit of B = 26000*3/16 = Rs 4875

Like? Yes (1) | No

(6 years ago) "Other"

Study the following data carefully and answer the question
that follows.
A%B = (A+B)2
A#B = (A2-B2)
A?B = (A-B)2
Question: Find the value of 5?(6%2)

Reply Like? Yes | No

(6 years ago)

5?(6%2)
=5?(6+2)2
=5?16
=(5-16)2
=(-11)2
=-22

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(6 years ago) "Other"

how to get place in companies?

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(6 years ago) "Other"

From a group of 3 boys and 3 girls, 4 children are to be randomly selected. What is
the probability that equal numbers of boys and girls will be selected?

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(6 years ago)

3/5 is the answer

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(6 years ago)

https://www.quora.com/From-a-group-of-3-boys-and-3-girls-4-children-are-to-be-randomly-selected-What-is-the-probability-that-equal-numbers-of-boys-and-girls-will-be-selected

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(6 years ago)

3/5 is my answer

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(6 years ago) "Other"

Please solve
169 144 289
121 196 441
32 35 ?

Reply Like? Yes (1) | No

(6 years ago)

36 is the answer

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(6 years ago) "Other"

A man has 1044 candles.after burning,he can make a new candle from 9 stubs left behind.find the maximum number of candles that can made?

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(6 years ago)

out of 1044 candles we can make 1044/9 i.e. 116 candles.
then out of 116 candles we can make 116/9 i.e 12 candles and 8 stubs left.
now out of 12 candles we can have 12 stubs and 8 above stubs so out of 20 stubs we can make 20/9 i.e. 2 candles. and 2 stubs remaining.
at last we have 2 stubs of above candle and remaining 2 stubs i.e 4 stubs .which cant make a candle.
So total candles=116+12+2=130.

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(6 years ago) "Other"

Reply Like? Yes (19) | No (6)

(6 years ago)

153846
as 153846*4= 615384
s(153846) = 615384

Like? Yes (2) | No

(6 years ago) "Other"

A man of 25 years old is replaced by another man in the committee of 6 people, having an average age of 23 years. After 5 years the average age of committee is 30. Find the age of that man at the time of being included in the committee.

Reply Like? Yes | No

(6 years ago)

37 years
New average age of committee before 5 years = 25 years
Total age of committee members at that time with new member = 150 years
Total age of committee members at that time with old member = 138 years
Total age of committee members at that time without old member = 138-25=113 years
Age of new member at that time = 150-113=37 years

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(6 years ago) "Other"

What is next number in series 11234783131

Reply Like? Yes | No

(6 years ago)

The series is 11 23 47 83 131
11, 11+(12*1)=23, 23+(12*2)=47, 47+(12*3)=83, 83+(12*4)=131, 131+(12*5)=191

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to (6 years ago) "Other"

pooja shaw i can't get your answer clearly.can you please elaborate clearly for me.

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(6 years ago) "Other"

Next number what

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(6 years ago) "Other"

1,2,5,9,10,14,26,30,31

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(6 years ago) "Other"

data interpretation

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(6 years ago) "Other"

The value of a scooter depreciates in such a way that its value at the end of each year is ¾ of its value at the beginning of the same year. If the initial value of the scooter is Rs. 39936. What is its value in Rs. at the end of 4 years?

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(6 years ago)

Rs 12636

Value after 4 years = 39936*(0.75)^4

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(6 years ago) "Other"

Find the number of zeroes in the expression 15*32*25*22*40*75*98*112*125

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(6 years ago) "Other"

Thanks for providing this technical support

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to (6 years ago) "Other"

how it will be the option 1??? will you explain?? According to the explanation given by you the invalid variables are 4!!!!

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(6 years ago) "Other"

(#M40001972) 3I-INFOTECH NUMERICAL ABILITY QUESTION placement question KEEP AN EYE Keep an eye puzzle 2 hours after a freight train leaves Delhi a passenger train leaves the same station travelling in the same direction at an average speed of 16 km/hr. After travelling 4 hrs the passenger train overtakes the freight train. The average speed of the freight train was?

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(6 years ago)

S1×T1=S2×T2 => S2=(16×4)÷6=32/3 kmph

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(6 years ago) "Other"

Corporate jobs link is not update since many years
Please update to make that module beneficial to alll

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(6 years ago) "Other"

Q1. Cost of an item is x. It's value increases by p% and decreases by p% Now the new value is 1 rupee, what is the actual value ?

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(6 years ago) "Other"

andy and ballack start a business with capitals of Rs 20,000 and Rs 30,000 respectively.At the end of the year Charlie decides to join the business because he sees that it had been quite profitable. If it is decided that all three are to share the profit equally in the second year, but the total capital is to remain unchanged, then find the total amount charile has to pay Andy and Ballack to enter the business.

a. 33,333
b. 16,666
c. 10,000
d. 22,222

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(6 years ago) "Other"

yes i minterested in side

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(6 years ago) "Other"

8
x 3.14
___________
3
x 3.rot3
___________
64
x 100

=68.04%

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(6 years ago) "Other"

i want need for tcs aptitude questions

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to (6 years ago) "Other"

Hii, I would like to know that "all the ques. are almost same as shoen on m4maths?? " plz... :)

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(6 years ago) "Other"

A function f satisfies f(0) = 0, f(2n) = f(n), and f(2n + 1) = f(n) + 1 for all positive integers n. What is the value of f(2018)?

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(6 years ago) "Other"

Er.Manish kr.sir is my best teacher of mathematics
He is regard me on child for all student

Reply Like? Yes (1) | No

(6 years ago) "Other"

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(6 years ago) "Other"

Six years ago Raj’s father’s age is 6 times the age of Raj. The difference of present ages is 35. What is the sum of their present ages?

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(6 years ago)

LET PRESENT AGE OF RAJ BE X AND FATHER BE Y.
BY THIS Y-6=6(X-6)
Y-X=35
SOLVING THIS
WE GET X=13
Y=48
SO Y+X=61
SUM OF THEIR PRESENT AGES =61

Like? Yes (1) | No

(6 years ago) "Other"

There are three cities A, B and C. Two ways to reach C from A or B. Shortest distance from A to B is 66 km. Shortest distance from B to C is 45 km. Shortest distance from A to C is 50 km. There is another city called P. Shortest distance from P to A is 180 km. Shortest distance from P to B is 200 km. Find the shortest distance between P to C.

Reply Like? Yes (3) | No

(6 years ago) "Other"

An individual deposited 10% of 20% of 30% of what he had into his account with a bank. If he deposited rs744, how much was he having initially with him before depositing?

Reply Like? Yes | No

(6 years ago)

if he has got x Rs initially, then
x*0.1*0.2*0.3= 744
x= 744/ 0.006 = Rs. 124000

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(6 years ago) "Other"

How many digit "1"s are being used in writing numbers from 1 to 160 in Binary system?
can anyone explain me this

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(6 years ago) "Other"

It was calculated that 75 men could complete a piece of work in 20days. When work was scheduled to commence, it was found necessary to send 25 men to another project. How much longer will it take to complete the work?

Reply Like? Yes | No

(6 years ago)

Total time reqd now = 75*20/50 = 30 days
Additional days required = 30-20=10

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(6 years ago) "Other"

how many pairs (m,n) of integers satisfy the equation 4^m=n^2+15

Reply Like? Yes | No

(6 years ago)

m=2, n=1 will satisfy given condition.

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(6 years ago) "Other"

If a ratio is 2A:3B:4C Find A:B:C?

1)6:4:2

2)6:2:1

3)6:4:7

4)none

Reply Like? Yes | No

(6 years ago)

ans is :6:4:3
a:b=3:2
b:c=4:3
on solving a:b:c=6:4:3

Like? Yes (1) | No

(6 years ago)

I think, the statement should be
If 2A= 3B = 4C, then
Find A:B:C.

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(6 years ago) "Other"

If good is coded as 41 then bad =

Reply Like? Yes (1) | No

(6 years ago)

In alphabetic order,
g=7
o=15
0=15
d=4
then 7+15+15+4=41
now,
bad=2+1+4=7
answer is 7

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(6 years ago)

In alphabetic order g=7 o=15 o=15 d=4 then 7+15+15+4=41 now bad=2+1+4=7

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(6 years ago)

g:7
o:15
o:15
d:4
so 7+15+15+4=41
similarly bad=2+1+4=7

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(6 years ago) "Other"

If two pipes function simultaneously the reservoir is filled in 12hrs.one pipe fills the reservoir 10hrs faster than the other. How many hours does the faster pipe take to fill the reservoir?

Reply Like? Yes | No

(6 years ago)

20 hours

Let slower pipe takes x hours, then faster pipe takes (x-10) hours.
Part filled in 1 hour=1/x + 1/(x-10) =1/12
=> (2x-10)*12 = x(x-10)
=> x^2 - 34x + 120 = 0
=> (x-4) (x-30) = 0
So x=4 or 30
As faster pipe takes 10 hrs. less than the slower pipe, the value of x must be 30.
Hence faster pipe takes 20 hours.

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(6 years ago) "Other"

Has anyone attended cgi placement? If u could tell placement process?

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to (6 years ago) "Other"

A 3-digit number 4a3 is added to another 3-digit number 984 to give a 4-digit number 13b7, which is divisible by 11.
Find a and b?

Reply Like? Yes | No

(6 years ago)

1+b=3+7=>b=9
1397-984=4a3=>a=1
Hence a=1,b=9

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to (6 years ago) "Other"

PLEASE SEND FACE BOOK ID....

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

(6 years ago) "Other"

In ∆ABC, D and E are the points of sides AB and BC respectively such that DE | | AC and AD : DB = 3 : 2. The ratio of area of trapezium ACED to that of ∆BED is?

Reply Like? Yes | No

(6 years ago)

DE||AC=>AD/DB=3:2=>∆ADE~∆ABC
Ar∆ADE/Ar∆ABC= 3^2/(3+2)^2=9/25
At of Trapezium= 25-9=16
Ratio of Trapezium and ∆BED=16:9

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(6 years ago) "Other"

please any one tell me HSBC pune selection process?

Reply Like? Yes | No

(6 years ago) "Other"

result when multiplying 1,2,4,3 that is 4! =24. how many values of n, is ((n!)^2+23) is a perfect square?

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(6 years ago) "Other"

fresh fruit contains 68% water and dry fruit contains 20% water.how much dry fruit can be obtained fromfrom 100kg of fresh fruits.

Reply Like? Yes | No

(6 years ago)

Let say pulp is a content in fruit without any water.
Remove water% to get pulp percentage.
Fresh Fruit has (100-68)% = 32% of pulp
Dry fruit has (100-20)% = 80% of pulp
100 kg of fresh fruit has 100*32% =32 kg of pulp
Mass of dry fruit = (Pulp percentage in 100 kg of fresh fruit)/(Pulp percentage in dry fruit)
M= 32/(80%)
M = 40 kg.

Like? Yes (2) | No

to (6 years ago) "Other"

90 people applied for a job as a salesperson for a book publishing company. 10 of the applicants had never worked in sales or in publishing business. 65 had worked in sales at some point and 58 had some background in publishing.How many of the applicants had experience in both sales and publishing ?

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

(6 years ago) "Other"

by selling 300 apples a seller gains the selling price of 60 apples. the gain of the seller is

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(6 years ago) "Other"

Hi how to prepare for infosys offcampus ,I want some guidelines and materials (if avail)

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(6 years ago) "Other"

Answer explanation is not sufficient

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(6 years ago) "Other"

The average of a list of 6 numbers is 20. If we remove one of the numbers, the average of the remaining numbers is 15. What is the number that was removed?

Reply Like? Yes | No

(6 years ago)

6*20-5*15=120-75=45

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(6 years ago)

Let me answer this question first in a conventional way.
Sum of all the numbers = 6*20 = 120
Sum after remaining one number = 5*15 =75
So the number to be removed is 120-75 = 45
Ans : 45

Another approach is
After removing one number the average is reduced by 5
And also we are removing one number.
So the number is (Updated average)-(Change in average)*(Number of terms)= 15-(-5)*6 = 45.

Like? Yes (1) | No

(6 years ago) "Other"

The weight age given to various subjects while calculating total marks of a student is
inversely proportional to maximum marks of the subject. If math has weight age 0.5 and
maximum marks 100, and weight age for science is 0.875, what are the maximum marks
for science?

Reply Like? Yes | No

(6 years ago)

(0.875/0.5)*100=87500/500=175

Like? Yes (1) | No (1)

(6 years ago) "Other"

A very special island is inhabited only by knights and knaves. Knights always tell the truth, and knaves always lie. You meet four inhabitants: Usha, Eesha, Nisha and Asha. Usha tells you ‘Eesha is a knave’. Eesha tells you ‘Asha is a knave’. Nisha claims, ‘Eesha is a knight and Asha is a knave.’. Asha tell you, ‘I and Nisha are different.’ identify the knaves

Reply Like? Yes (2) | No

(6 years ago) "Other"

https://scholar.google.co.in/citations?user=Ur9mg_AAAAAJ&hl=en
http://www.academicroom.com/users/drpremrajp
https://orcid.org/0000-0002-2289-5277

Reply Like? Yes (1) | No

(6 years ago) "Other"

Sumi of digits in product of 16^100*125^135 is

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(6 years ago) "Other"

A and B are running around a circular track of length 120 meters with speeds 12 m/s and 6 m/s in
the same direction. When will they meet for the first time? Answer

Reply Like? Yes | No

(6 years ago)

Let's assume both A and B start at the same point and same time.
The relative velocity of A with respect to B is 12-6 = 6 m/s.
This indicates for every second, A will be ahead of B by 6 metres.
So to meet B again, A has to cover a distance of 120 m (length of the track).
Time taken = 120/6 = 20 seconds

Ans: 20 Seconds.

Like? Yes (1) | No

(6 years ago) "Other"

A principal at simple interest of 5% per annum amounts to Rs. 15755 after 3 years. What was the original
principal ?

Reply Like? Yes (1) | No

(6 years ago)

13700
If x is principal , then amount after 3 years = 1.15x=15755
x= 13700

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(6 years ago) "Other"

is there any java developer opening available for 2 + years of experience i am sandeep batule,
currenlty in pune,maha,india.
skills: core java,servlet,jsp,javascript,ajax,mysql,spring mvc,hibernate,jasper report,github

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(6 years ago) "Other"

What is the HCF of 1/3, 2/3 and 1/4

Reply Like? Yes (2) | No

(6 years ago)

1/12
HCF of 1,2,1=1
LCM of 3,3,4 =12
Hence rqd HCF= 1/12

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(6 years ago) "Other"

In a hotel we can order two types of varieties, but we can make 6 more varieties in home.
One can choose the four varieties with two from hotel as must. Find how many ways one can
order.

Reply Like? Yes | No

to (6 years ago) "Other"

Out of every 100 people in police department, 10 are women. Out of every 100 people in military forces, 3 are women. In a batch of 180 police personnel and 200 army personnel, how many of them would be women?

Reply Like? Yes | No

(6 years ago)

Number of women in In a batch of 180 police personnel and 200 army personnel = 18+6=24

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(6 years ago) "Other"

coin is tossed 3 times by Raju. What is probability that Raju wins all three times?

Reply Like? Yes (1) | No

(6 years ago)

1/8
probability of winning each time = 1/2
probability that Raju wins all three times = (1/2)^3= 1/8

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(6 years ago) "Other"

A fence has to be made. Posts are to be for every 6 m interval. They are at starting and ending point. Person brings some posts and there are 7 posts lacking. If they are 9 m interval the posts are sufficient. How many posts did the persons bring?

Reply Like? Yes (1) | No

(6 years ago)

13
if the persons brings x posts, then
total fence length = 9x+9 = (x+7)*6+6
x=13

Like? Yes | No (3)

(6 years ago)

cant understand

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(6 years ago) "Other"

Reply Like? Yes | No

(6 years ago) "Other"

after allowing 25% on the m p , an article was sold for rs 180 find the cp

plzzzzzzzzzzzzzzzzzzzzzz answer

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(6 years ago) "Other"

Can anyone send me material of amcat .my email id is anubhab961@gmail.com

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(6 years ago) "Other"

I attended infosys off campus interview on 9th july at AMC College bangalore. Many of my friends who also attended on the same day, got login details from talentacquision@infosys.com, but i didn't get. What's the reason behind it, do you have any idea ??

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(6 years ago) "Other"

If any one knows how to crack the KAAR TECHNOLOGIES ROUNDS

Reply Like? Yes (1) | No

(6 years ago) "Other"

Latest A website Aptitude Question SOLUTION: If 4^a=5 5^b=6 6^c=7 7^d=8 Then find the value of abcd

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(6 years ago) "Other"

What is the remainder of 3^(101)÷77

Reply Like? Yes (1) | No

(6 years ago) "Other"

a and b work alone in 15 and 25 days respectively.they started the work together but b leftand a finished in 7 days.then how many days from the start did b leave?

Reply Like? Yes (1) | No

(6 years ago) "Other"

Mathematics is the mirror of human civilization

Reply Like? Yes (2) | No

(6 years ago) "Other"

what is the coefficient of x² in the expression,(1+x)(1+2x)....(1+nx)?

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(6 years ago) "Other"

A and B can complete work together in 5 days. If A works at twice his speed and B at half of his speed, this work can be finished in 4 days. How many days would it take for A alone to complete the job?

Reply Like? Yes | No

(6 years ago)

5(A+B)=4(2A+0.5B)
=>5B-2B=8A-5A
=>3B=3A
=>A/B=1
efficiency of A is 1.Total work is 5(1+1)=10.So,requried days=10/1=10(ans)

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(6 years ago) "Other"

when n takes census among pupil 60% of pupil prefer brand A. When x takes 70% of pupil prefer brand a.what is the value of x in terms of n.

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(6 years ago) "Other"

Anyone knows 2018 elitmus exam questions paper pls share

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(6 years ago) "Other"

When (1.8) ^8=w
Then w is nearly equal to the value??
Options: a)65 b)110 c)165 d)85

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(6 years ago) "Other"

When (1.8) ^8=w
Then w is nearly equal to the value???

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(6 years ago) "Other"

help me to place in TCS

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(6 years ago) "Other"

A five-digit number is formed using digits 1, 3, 5, 7 and 9 without repeating any one of them. What is the sum of all such possible numbers

Reply Like? Yes (1) | No

(6 years ago) "Other"

If any one knows about tcs digital aptitude syllabus

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(6 years ago) "Other"

Each of alia, Betty , carol

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(6 years ago) "Other"

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?

Reply Like? Yes | No

(6 years ago)

16 times is the correct ans

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(6 years ago)

all bells toll together every 120 th second
that is 1 time in every 2 minute
hence in 30 minutes = 15 times

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(6 years ago) "Other"

100 RS is given to you and u have to ge 100 birds

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to (6 years ago) "Other"

(98*98*98 – 73*73*73)/( 98*98*98 – 73*73*73)=?
a).171 b).4 c).420 d).415

can you answer me?

Reply Like? Yes (5) | No (3)

(6 years ago) "Other"

Five person income of a is equal to 15% income of B and 10% income of b is equal to 20% income of see if income of C is 2000 total income of ABC is

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(6 years ago) "Other"

_ + _ = 8
+ +
_ - _ = 6
= =
13 8

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(6 years ago) "Other"

Distance between A and B is 450 km. A car and a
bus travel from A to B speed of car is 20 km/h more
than that of bus. After travelling 2/3rd distance car
stops for 2 hours and after that remaining distance
is covered at 2/3rd of initial speed and reaches at B.
Bus after travelling 1/3rd of distance stops for 1
hour and after that increases its speed by 25% and
reaches at B at the same time as the car. Find the
speed of bus and car and also find the time taken it
took the car and the bus to reach at B.

Reply Like? Yes | No (1)

(6 years ago) "Other"

A dog is chasing a rabbit. Initially distance between
them is 400 leaps of dog. The time taken by dog to
take 4 leaps is equal to 6 leaps taken by rabbit in
that time. Rabbit covers 1.5 m in 1 leap and dog
covers 2.5 m in 1 leap. In how many leaps will the
dog catch the rabbit?

Reply Like? Yes | No (1)

(6 years ago) "Other"

A sum of 68 consecutive integers a1, a2, a3&.. an is 4318. What is the sum of their squares ( a1^2, a2^2, a3^2.. a68^2 )?

Reply Like? Yes (14) | No

(6 years ago) "Other"

A sum of 68 consecutive integers a1, a2, a3&.. an is 4318. What is the sum of their squares?

Reply Like? Yes (5) | No

(6 years ago)

sum of square of consecutive integer no = {n(n+1)(2n+1)}/6
={68*(68+1)*(2*68+1)}/6
={68*69*137}/6 =107134

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(6 years ago) "Other"

sorry to ask i need to know the use of solving problems in this website. Is any recruiting process is going based on the performance.

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(6 years ago)

For recruitment processes, the first round conducted by any top MNC company is APTITUDE TEST. For that purpose, this site is useful for discussing and getting things clarified ( aptitude related questions ) from both faculty, and fellow peers.

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(6 years ago)

thank you for your reply sir .And also i have a doubt depend upon the score company people recruit us or not

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(6 years ago) "Other"

The average age of a group of 12 students is 20 years. If 4 more students join the group, the average age increases by 1 year. The average age of the new students is?

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(6 years ago)

For 12 is 20
For 16 is 21 then
For 4 is 18 ....so ans is 18

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(6 years ago)

12 -- > 20
16--> 21
so 4-- > 24

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(6 years ago) "Other"

Explain ?

DTP=744, ATM-147 then XIN=? a). 999 b). 989 c). 988 d). 997

Reply Like? Yes (2) | No

(6 years ago) "Other"

Venn diagram questions

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(6 years ago) "Other"

Explain ?

DTP=744, ATM-147 then XIN=? a). 999 b). 989 c). 988 d). 997

Reply Like? Yes | No (1)

(6 years ago) "Other"

In the reading room of a library, there are 23 reading spots. Each reading spot consists of around table with 9 chairs placed around it. There are some readers such that in each occupied reading spot there are different numbers of readers. If in all there are 36 readers, how manyreading spots do not have even a single reader?
a) 8 b)17 c) 16 d) 15

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