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Maths Quotes

MATHEMATICS IS THE ONLY SUBJECT WHICH DEVELOPS OUR LOGICAL THINKING

pavanchandra

As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.

Albert Einstein

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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(8 years ago) "Other"

a car runs first 1000 km at 40 kmpl and next 2500 km at 50 kmpl ...then what was the avg fuel consumption

Reply Like? Yes (1) | No

(8 years ago) "Other"

1+3+5+ ........... +3983 / 1992 is exactly divisible by

Reply Like? Yes (1) | No

(8 years ago) "Other"

find odd one 2,10, 50, 500, 1000

Reply Like? Yes (1) | No

(8 years ago)

The answer is 2.

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(8 years ago) "Other"

Anyone attended Tech mahindra off campus in Apr month &got ur DOJ ??

Reply Like? Yes (1) | No

(8 years ago) "Interview"

23. On selling a bat at 5/7th of its marked price, the store earns 15% profit. What is the profit earned if it is sold at marked price?

Reply Like? Yes (7) | No

(8 years ago)

If it is sold at Marked price, there comes 61.08 profit%

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to (8 years ago) "Other"

Better u focus on your own performance and not on the winning streaks of others, i saw your comments twice regarding the same.

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

(8 years ago)

Thanks for your suggestion.. But its none of ur business so be out of it..

Like? Yes (3) | No

(8 years ago) "Other"

Dear Manish sir,
In the question ,A toy train can make two musical sound..........
your sol. is as follows...
only two different tunes are there, so for making 5 consecutive music tunes of the same type, probability = (1/2)(1/2)(1/2)(1/2)(1/2)*2 = 1/16
last 2 is because of the two case (1) first tune all 5 times (2) second tune all 5 times
but here the question is based on odds, so answer should be (1/16)/[(1-(1/16)] = 1/15

dear sir , help me to understand 1) multiplication by 2...... as we r not choosing musical sound , 1/2 is the prob. of selecting one sound out of given two sounds
2) how this question is based on odds

Reply Like? Yes (1) | No

(8 years ago) "Other"

Help me solve these puzzels as soon as possible...
Puzzle 1:
JAABCEHACBACDEEHIADDBCCCGGFAJIHG

Find the sequence involved in the above phrase
-----------------------------------------------
Puzzle 2:
877383722089798520717979682076678575

Find hidden message encoded in the numeric sequence
-----------------------------------------------
Puzzle 3:
531593615677719731793835897979

Find the two numeric sequences interspersed above

Reply Like? Yes (1) | No

(8 years ago) "Other"

an accent car covers first 1000 km at 40km per litre and next 2500 km at 50 km per litre of petrol. What is the average petrol consumption for the total journey?

Reply Like? Yes (1) | No

(8 years ago)

37.5 litres of petrol as (50+25)/2

Like? Yes (1) | No

(8 years ago) "Other"

6 men and 7 women can earn Rs. 2238/- in 4 days and 5 men and 8 women can earn Rs. 5067/- in 9 days. In how many days 7 men and 5 women will earn Rs. 7910/- ?
1) 12 days
2) 13
3) 14
4) 15
5) 1

Reply Like? Yes (1) | No

(8 years ago) "Other"

when will be the rsult of amcat......i hve givn it on 1st may?

Reply Like? Yes (1) | No

to (8 years ago) "Other"

30 persent of a number is 15 less than 3/5th of that number. what is the number? how to solve this sum ? help me

Reply Like? Yes (2) | No

(8 years ago)

Take x as the no. Now form an equation (30/100)×(x)=(3/5)×(x) - 15,
solve this, you"ll get 50.

Like? Yes (1) | No

(8 years ago) "Other"

My AMCAT score is --
English Comprehension 595 88.5%
Quantitative Ability 550 68.4%
Logical Ability 640 95.8%
Computer Programming 465 71.2%
Computer Science 346 39.3%
what are the chances of getting calls from good companies??

Reply Like? Yes (1) | No

(8 years ago)

amcat scores are out ?????when u hv givn d xam.....on what dtae?

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(8 years ago) "Other"

92 answer of 9 may 2016

Reply Like? Yes (1) | No

(8 years ago) "Other"

When an article is sold for RS. 703 loss incurred is 25% less than the profit earned on selling it at 836 . what is the selling price of the article when it earns a profit of 20%

Reply Like? Yes (1) | No

(8 years ago) "Other"

I got pH score of
Quant 97.1%
Logical 76.8%
Verbal 22%

How is the score and what are the chances of getting a call. I have written the test first time

Reply Like? Yes (1) | No

(8 years ago) "Other"

4 8 20
9 3 15
6 6 ?

Easy ans 18 and 24 both correct it have one more ans if you interested then find other one also

Reply Like? Yes (1) | No

(8 years ago) "Other"

X purchased a car at 13/15 of its marked price and sold it at 12% more than its selling price. His gain % is -
A)20%
B)30%
C)38 1/13%
D)29 3/13%
E)none of these

Reply Like? Yes (1) | No

(8 years ago) "Other"

In AMCAT
Computer programming 71 %
Quantitive 93%
English 80%
Logical 58%
May i recieve call from companies for software developer or soft engg.

Reply Like? Yes (1) | No

(8 years ago) "Other"

I have recently given the elitmus xam.in the quantitative section and logical reasoning I have attempted 6 each out of which 3 are surely correct in each sectioñ.in the verbal part I attempted 16 out of which 10 are surely correct.what can be my percentile????????

Reply Like? Yes (1) | No

(8 years ago) "Other"

I am MBA student in finance.....please suggest me about the apttitude.....what i will do for the encourage my apptitude skill...

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to (8 years ago) "Other"

The difference between the compound interest and the simple interest accrued on an amount of Rs. 18,000 in 2 years was Rs. 405. What was the rate of interest p.c.p.a?

Reply Like? Yes (1) | No

(8 years ago)

The difference between the compound interest and the simple interest accrued on an amount of Rs. 18,000 in 2 years was Rs. 405. What was the rate of interest p.c.p.a?

Like? Yes (1) | No

(8 years ago)

Ans: 15%

The difference b/w the compound interest and the simple interest over 2 years=P*(r/100)^2
P*(r/100)^2=405;
18000(r/100)^2=405;
r^2=405*10000/18000=225
r=15 %

Like? Yes (2) | No

to (8 years ago) "Other"

hey bro i am also 2014 batch got my interview in TM on 4 th , can you please share the topics u encountered and which material helped you out

Reply Like? Yes (1) | No

(8 years ago) "Other"

Hello, I hav got call letter for cognizant through amcat,so again do they conduct aptitude+logical+English test or TR and HR round...guys plz do share ur experience and what all to be prepared for TR round also

Reply Like? Yes (5) | No

(8 years ago) "Other"

Thanx for prize amount. This was my first experience with m4maths. Once again thanx m4maths.

Reply Like? Yes (1) | No

(8 years ago) "Other"

how many questions can attempt to qualify elitmus please explain?

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to (8 years ago) "Other"

exam date-28/04/2016 venue-Sharda University

Reply Like? Yes (1) | No

(8 years ago) "Other"

Anyone can tell me how can I get good score in elitmus?

Reply Like? Yes (1) | No

(8 years ago) "Other"

By selling 12 toffees for a rupee, a man loses 20%. How many for a rupee should he sell to get a gain of 20% ?

Reply Like? Yes (4) | No

(8 years ago) "Other"

20. Two trains, each 100 m long are moving in opposite directions. They cross each other in 8 seconds. If one is moving twice as fast the other, the speed of the faster train is

A. 75 km/hr

B. 60 km/hr

C. 35 km/hr

D. 70 km/hr

Hide Answer|Notebook | Discuss
Here is the answer and explanation

Answer : Option B

Explanation :

Total distance covered = 100+100 = 200 m

Time = 8 s

let speed of slower train is v . Then the speed of the faster train is 2v

(Since one is moving twice as fast the other)

Relative speed = v + 2v = 3v

3v = 200/8 m/s = 25 m/s

=> v = 25/3 m/s

Speed of the faster train = 2v = 50/3 m/s = (50/3)×(38/15) km/hr = 5×36/3 = 5×12 = 60 km/hr

Reply Like? Yes (1) | No

(8 years ago) "Other"

log(0.57)=bar(1).756 then value of log 57+(3)log(0.57)+(0.5)log(0.57) can someone solve this the correct ans is given as bar(1).146 but i am getting it as 0.902

Reply Like? Yes (1) | No

(8 years ago) "Other"

Can anyone help me.I have doubt on technical interview... questions from your projects asked while you are attending interview after finishing college.... Because I fear that my is very simple

Reply Like? Yes (1) | No

(8 years ago) "Other"

A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

Reply Like? Yes (1) | No

(8 years ago)

days required = 15 days

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(8 years ago) "Other"

The present worth of Rs. 1404 due in two equal half-yearly installments at 8% per annum simple interest is:

Reply Like? Yes (3) | No

(8 years ago) "Other"

what is address of ipv6

Reply Like? Yes (1) | No

(8 years ago) "Other"

6,24,29,116,121,?,489

Reply Like? Yes (6) | No (2)

(8 years ago)

484 is the ans
6*4=24 24+5=29
29*4=116 116+5=121
121*4=484 484+5=489

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(8 years ago)

484 is the answer

Like? Yes (2) | No

(8 years ago) "Other"

There is a ladder resting against a wall of height 8m with a top of ladder coinciding with the of wall. when the foot of ladder is moved 2m away from the wall; the top of ladder slips down & coincides with the foot of the wall .find the length of ladders

Reply Like? Yes (7) | No (1)

(8 years ago)

17m

Like? Yes (3) | No (3)

to (8 years ago) "Other"

Q: Tom is chasing Jerry. In the same interval of time Tom jumps 8 times while Jerry jumps 6 times. But the distance covered by Tom in 7 Jumps is equal to the distance covered by Jerry in 5 Jumps. The ratio of speed of Tom and Jerry is ?

Reply Like? Yes (2) | No

(8 years ago)

(8*5/(6*7)=40/42

Like? Yes (2) | No

(8 years ago)

40/42

let distance be d and time interval be t

distance covered by tom in one jump=d/7
distance covered by jerry in one jump=d/5

time taken by tom for one jump=t/8
time taken by jerry for one jump=t/6

speed=distance/time

toms speed=(distance covered in one jump)/(time taken for one jump)
=(d/7)/(t/8)=8d/7t
similarly,
jerrys speed=(d/5)/(t/6)=6d/5t

toms speed/jerrys speed=(8d/7t)/(6d/5t)=40/42

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(8 years ago) "Other"

Quantitative- 53.5%
Eng- 59.9%
Logical-65.4%
Computer science -96%
Computer Programming- 97%
Can I expect any interview calls from software companies....????

Reply Like? Yes (1) | No

(8 years ago) "Other"

hi frnds gud evng to all.....

Reply Like? Yes (2) | No

to (8 years ago) "Other"

in a palace 1200 soldiers had food for 28 days after 4days 300 soliders left. the remaining food will be sufficient for how many days.

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

(8 years ago)

after 4 days , 1200 soldiers will have sufficient food for 28-4 = 24 days
but 300 soldiers left and so 900 remain in palace, therefore food will last for (24 * 1200)/900 = 32 days

Like? Yes (2) | No

(8 years ago) "Other"

a boat can travel 10.2km upstream in 51 minutes. if the speed of the current is 1/5 of the speed of he boat in still water, how much distance can the boat traveled downstream in 48 minutes?

Reply Like? Yes (1) | No

(8 years ago)

14.4 km.

If speed of the boat=x kmph, then speed of the current=x/5 kmph and upstream speed=x-(x/5)=4x/5
As boat can travel 10.2 km upstream in 51 minutes, so 10.2/(4x/5)=51/60 ,x=15
So speed of the current=x/5=15/5=3 kmph and downstream speed=15+3=18 kmph
Distance that boat can travel in 48 minutes or 4/5 hours =18*4/5=14.4 km

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to (8 years ago) "Other"

how can we give a mango to two persons equally?

Reply Like? Yes (2) | No

(8 years ago)

By making mango juice, we can divide mango juice in two equal parts.

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(8 years ago) "Other"

feeling happy....:)

Reply Like? Yes (1) | No

to (8 years ago) "Other"

The ratio of number of balls in bags x, y is 2: 3. Five balls are taken, from bag y and are dropped in bag x. Number of balls are equal in each bag: now. Number of balls in each bag now is?

a) 20 b) 30

Reply Like? Yes (2) | No

(8 years ago)

25

If initially there were 2a & 3a balls in bag x and bag y respectively, then
3a-5=2a+5
a=10
So number of balls in each bag now=3a-5 or 2a+5 =25

Like? Yes (3) | No

(8 years ago) "Other"

Two circular metallic discs have a thickness of 15 mm. Their areas are in the ratio of 9:1. The smaller dia disc is pressed against the bigger disc and rotated around it on a flat surface. How many times will the small disc rotate before it completes one circle of the bigger disc?

Reply Like? Yes (1) | No

(8 years ago)

let r1 be the radius of larger disk r2 be the radius of small disk

pi (r1)² /pi(r2)² =9/1

r1/r2 =3/1

let r1 =3x and r2 = x

2 *pi*r1 = 6pix
2*pi *r2 =2pix

perimeter are in the ratio 3:1

therefore small disc rotate 3 times in one rotation of larger disc

Like? Yes (1) | No

(8 years ago) "Other"

what are the perfect sites for to prepare tech mahindra exam?

Reply Like? Yes (1) | No

(8 years ago) "Other"

how to prepare for aptitude test for tcs.?pls tell me sugession .

Reply Like? Yes (1) | No

(8 years ago)

campusgate and m4maths are more than enough for the apti

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to (8 years ago) "Other"

Brother when the series is squared,then we use the formulae
(n(n+1)(2n+1))/6, how you changed the formulae...help me, still I am very much confused....

Reply Like? Yes (1) | No

(8 years ago)

Hi bro,
1^2 + 3^2 +5^2 +.....,n term =(n/3)*(2n+1)*(2n-1)------(1)
2^2 + 4^2 +6^2 +.....,n term =(2n/3)*(n+1)*(2n+1)------(2)
For even,
(1^2 - 2^2 +3^2 -4^2+......n term)= (1^2 + 3^2 +5^2 +...n/2 term) - (2^2 + 4^2 +6^2 +.....,n/2 term)
Using (1) & (2)
(1^2 - 2^2 +3^2 -4^2+......n term)= -n*(n+1)/2
For Odd,
(1^2 - 2^2 +3^2 -4^2+......n term)= (1^2 + 3^2 +5^2 +...(n+1)/2 term) - (2^2 + 4^2 +6^2 +.....,(n-1)/2 term)
Using (1) & (2)
(1^2 - 2^2 +3^2 -4^2+......n term)= n*(n+1)/2

Like? Yes (2) | No

(8 years ago)

The difference between the compound interest and the simple interest accrued on an amount of Rs. 18,000 in 2 years was Rs. 405. What was the rate of interest p.c.p.a?
can you help me to solve in the easiest way?

Like? Yes (1) | No

(8 years ago) "Other"

I wanna josh technology solved placement papers plzz can anyone help ??

Reply Like? Yes (1) | No

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