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Maths Quotes

A man whose mind has gone astray should study mathematics.

Francis Bacon

You can only find truth with logic if you have already found truth without it.

Gilbert Keith Chesterton

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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(10 years ago) "Other"

pls send me Nomura (NRI fINTECH Ltd) Placement papers...my email id -upadhyay.sweta09@gmail.com

Reply Like? Yes (3) | No

(10 years ago) "Other"

A woman borrows $3000 at 16% on August 15th. She pays $600 on September 15th, $800 on October 15th, $600 on December 15th. If she makes a final settlement of February 15th of the following year, How much will she pay?.

#please explain before solution

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to (10 years ago) "Other"

no, i think correct ans is 7

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(10 years ago) "Interview"

Can you mail me AMCAT questions i have exam on 2nd Nov.Please mail me the questions on justesha1707@gmail.com

Reply Like? Yes (1) | No

(10 years ago) "Other"

All those who have infy referral drive exam on 26th oct delhi... how is preparation going ?? Share imp questions for all the sections..

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(10 years ago) "Other"

i am attending infosys referal drive on oct 26....there are some people attending tmrw....let me know the type of questions asked after exam.....

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(10 years ago) "Other"

If anyone know Incube Solutions pvt .Ltd company previous questions please let me know.

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(10 years ago) "Other"

if
S C O O B Y + D O O O = B U R I E D

then
B+U+R+I+E+D = ?
expln

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(10 years ago) "Other"

O N
M O N T Y
P Y T H O N
-------------
S P I R I T
plz explain it plz

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(10 years ago) "Other"

O N
M O N T Y
P Y T H O N
-------------
S P I R I T

Reply Like? Yes | No

(10 years ago) "Other"

Any one can explain , how to use M4maths?

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(10 years ago) "Other"

Can Any One Tell me How to Apply for Corporate Job Exam through M4Maths.?

Reply Like? Yes (1) | No

(10 years ago)

M4maths website is not for applying job....
Its for preparation only

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(10 years ago)

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(10 years ago) "Other"

Q: The minimum value of sin^n A + cos^n A+ sec^n A+ cosec^ A+ tan^n A +cot^n A ? I NEED COMPLETE SOLUTION PLS HELP ME

a) 3 b) 5 c) 7

Reply Like? Yes | No

(10 years ago)

ans of the solution is+> a) 3

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(10 years ago)

let n=2
Sin^2A+cos^2A=1
Sec^2A+tan^2A=1
Cosec^2A+Cot^2A=1
then the adding all three we get answer is 3

Like? Yes | No (2)

(10 years ago) "Other"

The ratio of the age of Ajay and Vijay is 3 : 4. After five years the new ratio of their ages will be 4:5. What is the age of Vijay at present?, 1)15 2)20 3)18 answer is 20 i need explanation please

Reply Like? Yes (38) | No (9)

(10 years ago)

let present age of ajay s x,
and vijay s y
then
x:y=3:4 (eqn 1)
then after 5 years
ratio s-
x+5/y+5=4/5 (eqn 2)
by solvng eqn 1 and 2
we get x=15
y=20
hence the age of vijay is 20 years

Like? Yes (27) | No (19)

(10 years ago)

3x+5 4
--------== ------
4x+5 5
cross multiplication
we will get x=5
substitute 5
4(5)= 20

Like? Yes (8) | No (10)

(10 years ago) "Other"

The ratio of the age of Ajay and Vijay is 3 : 4. After five years the new ratio of their ages will be 4:5. What is the age of Vijay at present?, 1)15 2)20 3)18 answer is 20 i need explanation please

Reply Like? Yes | No

(10 years ago)

Data sufficiency question asked in elitmus
which of these is greatest?
A) p>q , rq , r

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(10 years ago) "Other"

WISH EVERY BUDDDY ONLINE & OFFLINE A VERY HAPPY AND GLITTERING DIWALI.......!!!

Reply Like? Yes (1) | No

(10 years ago) "Other"

18:964::25216:? how to do this

Reply Like? Yes (1) | No (4)

(10 years ago)

is the ans is....46897?

Like? Yes | No (5)

(10 years ago)

1636
(Sum of digits of a number) & ( Unit square)

Like? Yes (1) | No (3)

(10 years ago)

[49][512]
expln:[1^2][2^3]:[3^2][4^3]::[5^2][6^3]

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(10 years ago) "Other"

120,315,300,? answer is 390 how is it someone please explain

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(10 years ago) "Other"

what would be the pattern, for banking exams recruiting engineers?

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(10 years ago) "Other"

where can i find the ibm english assessmnt bits

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(10 years ago) "Other"

In AMCAT I have got
98-English
83-Quants
89-Logical reasoning
65-Computer programing
69-Electronics and Semiconductor.

What are my chances of getting call??

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(10 years ago)

hi basu congrats..am preparing for amcat exam..can u tel me sum tips n study materials 2 score gud marks:-)

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(10 years ago) "Other"

if a,b and c are in Arithmatic progression then loga n,logb n and logc n are in
a)AP
b)GP
c)HP
d)none

Reply Like? Yes (1) | No

(10 years ago)

This seiesvin HP....

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(10 years ago) "Other"

1) There are 6562 balls out of them one is heavy .Find the minimum number of times the balls have to be weighted for finding out the heavy ball ?

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(10 years ago)

binary search apply 13 times

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(10 years ago)

can you explain it

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(10 years ago)

u know 2^1=2
2^2=4
2^3=8
similarly
2^10=1024
2^11=2048
2^12=4096
but u need 6562 balls so u need
2^13=12288

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(10 years ago)

minimum at the second time we can get but its very rare case but in maximum 12 times we can get the weighted ball

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to (10 years ago) "Other"

Q: Three numbers aree in G.P. Their sum is 21 and their product is 216. These three numbers are? I NEED COMPLETE SOLUTION PLS HELP ME

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(10 years ago)

Let the three numbers in a G.P. be a/r, a, ar
a/q
(a/r)*(a)*(ar)=216
=>a^3=216
=>a=6
&
(a/r)+a+(ar)=21
put a=6
6/r+6+6r=21
=>r=1/2 or 2
if r=2
3,6,12
if r=1/2
12,6,3

Like? Yes (3) | No

(10 years ago) "Other"

526^y=1024. Find the value of y.

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(10 years ago)

526^y=1024
526^y=2^10
taking log both side
y log 526=10 log 2
=>y=10 log 2/(log 526)=1.1063

Like? Yes (1) | No

(10 years ago) "Other"

I have scs written test after diwali so please any one provide the material
email id: santoshkumarpatel13@gmail.com

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to (10 years ago) "Other"

thanks you shraav

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(10 years ago) "Other"

can any one tell exact model of infosys referall drive

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(10 years ago) "Other"

Q: The number of bacteria in a certain culture doubles every 30 minutes. If there are 20 bacteria present in the culture orginally, howmany bacteria will be present at the end of two hours? I NEED COMPLETE SOLUTION PLS HELP ME

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(10 years ago)

After 30min 40
60min 80
90min 160
120 min(2 hrs) 320

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(10 years ago) "Other"

Peter and Paul are two friends. The sum of their ages is 35 years. Peter is twice as old as Paul was when Peter was as old as Paul is now. What is the present age of Peter?

Reply Like? Yes | No

(10 years ago)

Peter is 14 n paul is 21
by solving x+y=35 and x=2(y-x)

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(10 years ago) "Other"

How many digits are contained in the number 2^100 ?

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(10 years ago)

31 digits.
(1024)^1 having 3*0+4= 4 digits,
(1024)^2 having 3*1+4= 7 digits,
(1024)^3 having 3*2+4= 10 digits,
similarly, it will be 3*9+4= 31 digits in (1024)^10.

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(10 years ago)

can you explain how did you find digits in
(1024)^2, (1024)^3, (1024)^4.....

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(10 years ago)

Let 2^100=x
Take log
Log2^100=logx
100log2=logx
Log2=.3010
100*.3010=30.10
30.10=log10^x
X=10^30.10
X=31

Like? Yes (3) | No

(10 years ago) "Other"

Q: A cube is painted in such a way that three surfaces are painted in blue colour, two surfaces are painted in green colour and one surface is painted in Red colour. In how many different ways can the cube be painted?

a) 41 b) 60 c) 180 d) None of these

Reply Like? Yes | No (1)

(10 years ago)

41 ways.
6c3 + 6c2 + 6c1= 41.

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(10 years ago)

60 ways
6c3*3c2*1c1=60

Like? Yes (2) | No

(10 years ago)

b is d correct option
6c1*5c2*3c3=60

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(10 years ago) "Other"

A car is travelling at a uniform speed
The driver sees a milestone showing a 2 digit num
After travellingfor an hour the driver sees another milestone with THE SAME DIGITS IN REVERSE ORDER
AFTER ANOTHER HOUR THE DRIVER SEES ANOTHER MILESTONE CONTAINING THE SAME TWO DIGITS
WHAT IS THE AVERAGE SPEED OF THE DRIVER?

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(10 years ago)

the first milestone seen by the driver is 2 digited. let it be ... 10x + y ..(1)
After 1 hr
the second milestone is in reversed order. it must be ... 10y + x ....(2)
again after 1 Hr
the third milestone having same digit bt their is zero btween the to digitsit is given as ... 100x + 0*10 + y = 100x + y ....(3)
from eqn 2 and 3, we get
{(100x + y) - (10y + x)}/1 = speed of the car .... {Distance = speed * time}
therefore speed of the car = 99x - 9y .. (4)
from 1 1nd 2 ,we get
9y - 9x = speed of the car ....(5)
from eqn 4 and 5,we get
9y - 9x = 99x - 9y
or y - x = 11x - y
or y = 6x ... (6)
substituting this value in the eqns 1 and 2, we get
10x + 6x = 16x (the first milesztone)
10*6x + x = 61x (the second milestone)
Speed of the car = (distance between two milestone)/time
= (61x - 16x)/1
= 45x km/hr

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to (10 years ago) "Other"

thanks for posting todays solution.......please can you tell me how you got 527 ??

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to (10 years ago) "Other"

hi prerna
can you tell how to solve remainder question like
(3^90 + 5^90)/34

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

(10 years ago)

(3^3)30+(5^3)30/34
Now 27/34= -7 & 125/34= -1
=> (-7)^30+(-1)^30
=>(-7^2)15+1
=>49^15/34
=15^15..... 49/34=15 rem
(15^3)5/34
(15^3)/34=9 rem
(9^5)/34. =-9 rem
=>-9+1
=8 rem

Like? Yes (2) | No

(10 years ago) "Other"

the average age of boys in the class is twice the number of girls in the class.the ratio of boys and girls in the class of 50 is 4:1.he total no. of the ages of the boys in the class is ???????
a.2000
b.2500
c.800
d.400

Reply Like? Yes (7) | No (2)

(10 years ago)

no of boys = 4/5*50 = 40
no of girls = 1/4*50 = 10
avg age of boys = 2*10 = 20
total age of boys = 20*40 = 800

Like? Yes (8) | No (2)

(10 years ago) "Other"

the average age of boys in the class is twice the number of girls in the class of 50 is 4:1 , the total no. of the ages of the boys in the class is ???????
a.2000
b.2500
c.800
d.400

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

(10 years ago) "Other"

please tell me where is the interview questions in m4maths

Reply Like? Yes (1) | No

(10 years ago) "Other"

can any one post Virtusa latest Interview Experience plzzzzzzzzzzzzz??????????????????????????????

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

(10 years ago) "Other"

Three man A,B,C working together can do a job in 6 hours less time than A alone,in 1 hour less time than B alone and in one half the time needed by C when working alone.Then A and B together can do the job in
A. 2/3 hours B. 3/4 hours C. 3/2 hours D.4/3 hours

Reply Like? Yes (7) | No

(10 years ago)

D. 4/3 hours

Like? Yes (3) | No (1)

(10 years ago) "Other"

world +trade = center
c+e+n+t+e+r? can you explain me the concept of it.

Reply Like? Yes | No

(10 years ago)

it has to be.
c=w+t
e=o+r
n=r+a
t=l+d
e=d+e
r=r, as its the middle term of word "world"

Like? Yes | No

(10 years ago) "Other"

Hi

Can anyone tell me about infosys placement exam ? As I am giving my first time attempt this exam so tell me about the pattern. How i should prepare in 5 days.There is negative marking or not.Or we have to write the answer or we have to give complete solution of the question.How much marks and how many sections. How to prepare for all the sections and what is the cut off of it.My exam is this week,

With regards,
Naveen

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(10 years ago) "Other"

Which weighs more ? A pound of iron or A pound of copper?

Reply Like? Yes (2) | No

(10 years ago)

ans: A pound of anything equals a pound.
They both weight the same.

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(10 years ago) "Other"

Answer the questions on the basis of the information given below. Some children were taking free throws at the basketball court in school during lunch break. Below are some facts about how many baskets these children shot.

i. Ganesh shot 8 baskets less than Ashish.
ii. Dhanraj and Ramesh together shot 37 baskets.
iii. Jugraj shot 8 baskets more than Dhanraj.
iv. Ashish shot 5 baskets more than Dhanraj.
v. Ashish and Ganesh together shot 40 baskets.

Which of the following statements is true?

1.Ramesh shot 18 baskets and Dhanraj shot 19 baskets.
2.Ganesh shot 24 baskets and Ashish shot 16 baskets.
3.Jugraj shot 19 baskets and Dhanraj shot 27 baskets
4.Dhanraj shot 11 baskets and Ashish shot 16 baskets

Reply Like? Yes | No

(10 years ago) "Other"

Kuldeep a whole sale dealer sells grapes and sapotas and gets equal income from each.He gets a profit of 20% on each grape and a profit of 25% on each sapotas.If the ratio of the number of sapotas sold to the number of grapes sold is 4:1 what is the ratio of costprice

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(10 years ago) "Other"

friends,here is my amcat result..

english-76 percentile
quantitative-76 percentile
logical-96 percentile
computer programing-98 percentile

as i am 2012 passout(fresher),is there any chances of getting calls from some good IT companies?
pls reply

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(10 years ago)

hi congrats..am preparing for amcat exam..can u tel me sum tips n study materials 2 score gud marks...

Like? Yes | No

(10 years ago) "Other"

1. A shop stores x kg of rice. The first customer buys half this amount plus half a kg of rice. The second

customer buys half the remaining amount plus half a kg of rice. Then the third customer also buys half the

remaining amount plus half a kg of rice. Thereafter, no rice is left in the shop. Which of the following best

describes the value of x?

Reply Like? Yes | No

(10 years ago)

X=((X/2+1/2)+(X/4+1/2)+(X/8+1/2))
->x=12

Like? Yes | No (1)

(10 years ago)

[(x/2-1/2)-[[x-{x/2+1/2}]/2+1/2]]/2+1/2=0
=>x=6

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(10 years ago) "Other"

2,6,5,14,11,26,17,? What will be next no.

Reply Like? Yes | No

(10 years ago)

2+12=14 and 14+12=26 then 26+12=38

Like? Yes | No (2)

(10 years ago) "Other"

0,1,1,2,0.5,2,2,4,2,2,4,3,7,2,? What will be next no.

Reply Like? Yes | No

to (10 years ago) "Other"

how? i need complete solution

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