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Dimple

India

Punjab

Time: 00:01:33

Points

Maths Quotes

Mathematics its like a complex number. The mother of science.

Prabaharan

2 is not equal to 3 – not even for very large values of 2.

Unknown

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"

what is the remainder when 7^99 is divided by 2400??anyone know how to solve this?

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

(10 years ago)

7^1(7)/2400=7
7^2(49)/2400=49
7^3(343)/2400=343
7^4(2401)/2400=1
7^5(remainder of 7^4×7^1=7)/2400=7
Now since after every 4 terms we are getting the same set of remainders that is 7,49,343,1 so we have a cycle of 4 and now we just need to find 99 is which term in the cycle so 99/4=3... So the third term of the cycle is our remainder which is 343

Like? Yes (5) | No (6)

(10 years ago) "Other"

todays puzzle answer is 980. but it is not there.
srinivas 9849701749

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

(10 years ago)

yup, i also got that.

Like? Yes | No

(10 years ago)

total = 147 t-shirts , 2/3 rd = 98, rest=49

if x be printed price then
( 98 * 119x/100 + 49x ) - 147 * 88x/100 = 3626
=> 238x + 100x - 264x = 74*100
=> 74x = 74*100
=> x = 100

Like? Yes (1) | No

(10 years ago)

i got the question initially in wrong way. taking t-shirt = 15

Like? Yes | No

to (10 years ago) "Other"

HI priyatham first of all congrats... for clearing infy written test and plz let me know the paper pattern...

thanks in advance....

Reply Like? Yes (1) | No

to (10 years ago) "Other"

Q: In a row of boys, Rajan is 10th from right and Suraj is 10th from left. when Rajan and Suraj interchange their positions. now suraj is 27th from left. What is Rajan position from right? I NEED COMPLETE SOLUTION

Reply Like? Yes (27) | No (3)

(10 years ago)

after interchange now we got that there are 16 students in between rajan and suraj. So, Rajan position is 16+10=27th from right.

Like? Yes (8) | No (3)

(10 years ago) "Other"

please mail me infosys placement papers. my mail id is lekhagupta92@gmail.com. pleaseeeeee.

Reply Like? Yes | No

(10 years ago) "Other"

can anyone tell me how to prepare for infosys written exam, because i m feeling bit difficult to crack it.........

Reply Like? Yes | No

(10 years ago)

try to solve easy questions first as you can switch to any question but time is limited. for each sections different time is slotted. you will get sufficient time for solving quantitative aptitude(10 ques.- 35 min). Try to concentrate on verbal(40 ques-35 min). If, passage comes tough try solve it in last.For Analytic thinking, practice Syllogism( of higher difficulty).Other questions are normal.

Like? Yes (1) | No

(10 years ago) "Other"

anybody who has written exam of infosys on 23rd. nov.

Reply Like? Yes | No

(10 years ago)

pls say me whr to refer questions to crack infosys written test

Like? Yes | No

(10 years ago) "Other"

The average age a family of 6 members is 22yrs. if the age of the youngest member is 7 yrs, then what was the averege age of the family at the time of the birth of the youngest member

Reply Like? Yes (1) | No

(10 years ago)

(6*22-7-5*7)/5=18,, Subtracting the age of the youngest member and 7 years from each member , since average age asked during the birth of the youngest member

Like? Yes (4) | No

(10 years ago)

average age of 6 members=22=>22*6=>132-7=125/5=25

Like? Yes | No (1)

(10 years ago)

average age of 6 members=22=>22*6=>132-7=125/5=25 -7=18

Like? Yes (1) | No

(10 years ago) "Other"

The average of marks obtained by 120 candidates in an examination is 35. if the average marks of passed candidates is 39 and failed candidates is 15. what is the number of candidates who passes the examination.

Reply Like? Yes | No

(10 years ago)

let x be the no. of candidates passed.
39x+15(120-x)=35*120.
x=100

Like? Yes (2) | No

to (10 years ago) "Other"

Find the number of six-digit numbers that can be formed with the digits 1, 2, 3, and 4, if all the digits are to appear at least once?

Reply Like? Yes (1) | No

(10 years ago)

single digit 3 times repeated => 111234 , 222134, 333124, 444123 => 4* 6!/3! = 480

2 differ digit 2 times repeated => 112234,..............., such 6 types => 6* 6!/ 2!*2! = 1080

total = 480 + 1080 = 1560

is it right ?

Like? Yes (2) | No

(10 years ago)

hi rakesh ,can u explain how 6!/3! came?

Like? Yes | No

(10 years ago)

first we have to select extra two numbers to form six digits
so, no ways select two numbers from 1,2,3,4 is 4C2=6
no of ways we can arrange six digits in six places is 6! but out of two of the repeated
so 6!/2!
so total no of six digits possible is 6*(6!/2!)=3*720=2160

Like? Yes | No

to (10 years ago) "Other"

Two distinct integers are selected at random from 1, 2, 3, ... 100 and multiplied with each other. Find the probability (to two decimal places) that the product is divisible by 3

Reply Like? Yes | No

(10 years ago)

(33c1*67c1+33c2)/100c2=2739/4950=0.55

Like? Yes (2) | No

(10 years ago) "Other"

hii friendzz..
ny buddy who got Infosys joining of 8 dec please comment here about there travelling plan...particularly who are planning to go from delhi to banglore on 6 dec via flight.

Reply Like? Yes | No

(10 years ago)

may i know after the written test, in how many days you got the mail for the next round...

Like? Yes | No

to (10 years ago) "Other"

Q: In a 200m race A beat B by 10m or 2 seconds. What is A"s time over the race? I NEED COPLETE SOLUTION

a) 38sec b) 40 c) 42 d) none

Reply Like? Yes (19) | No

(10 years ago)

let the speed and time taken by B be x m/s and t sec respectively.
t*x=190
(t+2)*x=200
t=38 sec

Like? Yes (11) | No (1)

(10 years ago) "Other"

I had solved 3 or 4 question nd still didnot get any point ,will any1 tell me the procedure of getting score...

Reply Like? Yes | No

(10 years ago)

maybe your answers were wrong.

Like? Yes | No

(10 years ago)

point are only distributed on todays puzzle soltuion

Like? Yes | No

(10 years ago) "Other"

a committee of five is to be chosen from a froup of 9 people the probability that a certain a certain married couple will either serve together or not at all?

Reply Like? Yes (1) | No

(10 years ago)

(2c2*7c3/9c5)+(7c5/9c5)

Like? Yes | No

(10 years ago) "Other"

QUE: if a shopkeeper gives a 40% discount on an item n he still manages to make 20% profit. then what will the profit if he gives 25% discount.

Reply Like? Yes | No

(10 years ago)

profit will be of 50rps

Like? Yes (1) | No (1)

(10 years ago)

he gains 50% profit.

Like? Yes (3) | No

(10 years ago)

how u did this?.. can u plz xplain the steps

Like? Yes | No

to (10 years ago) "Other"

our polticians should be educated or dont alll people does not know

Reply Like? Yes | No

(10 years ago) "Other"

somebody pls tell me the new paper pattern of ibm pls...

Reply Like? Yes | No

(10 years ago) "Other"

An engineer decide to complete a work in 20 day and hired sixty men,after working for five days,he realize that,only 1/5th of the work is completed.if he wants to complete the work as he planned,how many more men he has to hire

Reply Like? Yes | No

(10 years ago)

in first 5 days work done=60*5=300 mandays=1/5 of work ie 20% work done in 5 days
work left=80% and it is done by 1200 mandays.
since 15 days are left to complete the work,so 1200/15=80 men ie he needs 20 men more because 60 men are already working.... :)

Like? Yes (4) | No

(10 years ago)

total work should be done in 20 days =1200(60*20)
work done by 60 men in first 5 days=300(60*5)= 1/5 of work
now 15 days are lift to complete the work so,1days work=1/15 and 1200 men complete the work =1200/15=80 men so,20 more men are required (i.e 80-60=20)

Like? Yes | No

(10 years ago) "Other"

twelve engineers can complete a task in 7 Hours.12 engineers started the task at 10 AM but starting from 1PM, One engineer leaving every Hours,At what time the task gets completed.

Reply Like? Yes | No

(10 years ago)

12e - 7hr - 1w
12e - 3hr - 3/7w.
also, 1e - 1hr - 1/(7*12)w.
3/7w+11/84w+10/84w+9/84w+8/84w+7/84w=81/84w completed up to 6p.m.
now, remaining 3/84w=1/28w will be completed by remaining 6e in
1e - 1hr - 1/84w
6e - 1hr - 1/14w
6e - 1/28w - 1/2hr.
hence, work will be completed by 6.30pm or in 17/2hr.

Like? Yes (2) | No

(10 years ago)

Total=12e-7hr=12*7=84 units
-----------------------------------------
completed work is10-1pm is=3hr,
so 12*3=36 units
Remaining is=84-36=48 units
------------------------------------------
1-2pm=11
2-3pm=10,
3-4pm=9,
4-5pm=8,
5-6pm=7,
6-7pm=6.....
we need to reach 48 units of work..
11+10+9+8+7=45,
now 3 more is extra day remaining next =6hr ....3/6=1/2=30min
so ans is=6:30 mins

Like? Yes (1) | No

(10 years ago) "Other"

Que. There are total 15 people. 7 speaks french and 8 speaks spanish. 3 do not speak any language. Which part of total people speaks both languages?
Can I please get an answer for this?

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

(10 years ago)

Total:u=15,
french:f+b=7 spanish:s+b=8
3 do not speak any language:n=3
n=u-(f+b+s)...
(f+b)+s=12
so s=5,f=4,b=3
so total people speaks both language=3

Like? Yes (2) | No (2)

(10 years ago) "Other"

my amcat score eng 80
math 78
cp 98
reasonig 68
is there any chances of getting calls from good companies

Reply Like? Yes (1) | No

(10 years ago) "Other"

I m preparing for amcat test. I m very weak in quant. So plz suggest me from were i have 2 study or any book i have 2 refer for amcat.
Thanks...

Reply Like? Yes | No

(10 years ago)

go through arun sharma LOD 1...
and M4math.com

Like? Yes | No

(10 years ago) "Other"

If 1 1 1 1= R
2 2 2 2= T
3 3 3 3= E
4 4 4 4= N
Then
5 5 5 5= ?
????????????????????

Reply Like? Yes (7) | No (3)

(10 years ago)

1+1+1+1=Fou(r)=R
2+2+2+2=Eigh(t)=T
3+3+3+3=Twelv(e)=E
4+4+4+4=Sixtee(n)=N
5+5+5+5=Twent(y)=Y

Like? Yes (14) | No (3)

(10 years ago)

Y (last charachter of addtion of all digits). e.g. 5+5+5+5=20 Twent Y

Like? Yes (2) | No

(10 years ago)

Your super sravanthi....ur right ans

Like? Yes (2) | No

to (10 years ago) "Other"

Hi rakesh......I am weak in solving problems of area, probability can u help me which material i have to follow......

Reply Like? Yes | No

(10 years ago)

solve all the problems of that chapter two or three times from any book.

Like? Yes (1) | No

(10 years ago) "Other"

can somebody please send l & t infotech latest 2014 placement papers to mac071092@gmail.com ?

Reply Like? Yes | No

(10 years ago) "Other"

can somebody please send l & t infotech latest 2014 placement papers to mac071092@gmail.com ?

Reply Like? Yes | No

to (10 years ago) "Other"

Hi Rakesh,I am kind of weak in probability related problems specially playing cards type ...can you please suggest me study material for that ...

Reply Like? Yes | No

(10 years ago)

play card games, u will know about it.

in 52 cards, 26 are of black & 26 are of red colours.
spade & club are of black suit while heart & diamond of red suit.
A standard pack of 52 cards has 4 suits (Hearts, Diamonds, Clubs, and Spades) with thirteen cards in each suit (Ace,2,3,4,5,6,7,8,9,10, Jack, Queen, and King). So, there are 4 Jacks, 4 kings , 4 aces & 4 queens in a deck (one of each of the 4 suits).

Like? Yes (3) | No

(10 years ago) "Other"

anybody have a hcl placement papers send to me plz.......... , with solutions or answers
mail id: llamarcriado006@gmail.com

Reply Like? Yes | No

(10 years ago) "Other"

anybody have a hcl placement papers send to me plz.......... , with solutions or answers

Reply Like? Yes | No

(10 years ago) "Other"

Q: Aam Aadmi party won how many loka sabha seats in general election 2014?

Reply Like? Yes | No

(10 years ago)

total no of seats won by AAp in 2014 loka sabha=4

Like? Yes (1) | No

(10 years ago) "Other"

Two trains starts at the same time from Mumbai and Pune and proceed toward each other at the rate of 60 km and 40 km per hour respectively.
When they meet,it is found that one train has travelled 20 km more than the other.Find the distance between Mumbai and Pune.

Reply Like? Yes (9) | No (3)

(10 years ago)

let the distance be x.
relative speed =60-(-40)=100km/h
time taken for both to meet = x/100 hr.
Given, 60x/100 - 40x/100 = 20.
x=100 km.

Like? Yes (14) | No (8)

(10 years ago)

Mumbai || Pune
V1=60 meeting point V2=40
| ||
x+20 x
at meeting point
(x+20)/60=x/40
so,x=40
total distance=x+x+20=100 ans.

Like? Yes (11) | No (4)

(10 years ago)

relative speed of 1st train =60 km/hr,other train =40km/hr. let distance travel by 2nd train be x nd distance travel by 2nd train x+20,nw t for 1st train=(x+20)/60=x/40..then =40 nd total distance will be =100

Like? Yes (6) | No (3)

(10 years ago) "Other"

for what maximun value of n will the expression 10200!/504^n be an integer?

Reply Like? Yes | No (3)

(10 years ago) "Other"

Find the remainder when 59^28 is divided by 7

Reply Like? Yes | No (3)

(10 years ago)

contact me 7699331746

Like? Yes | No

(10 years ago)

Ans is 1 if I try 59^28 mod 7

Like? Yes | No

to (10 years ago) "Other"

how will apply for mind tree pls tell me
?

Reply Like? Yes | No (1)

(10 years ago)

i dont know ..........

Like? Yes | No

(10 years ago) "Other"

Any body know of the company R System? If yes then please reply...about the campus drives and the question types!! at ghoshn598@gmail.com

Reply Like? Yes | No

(10 years ago)

call me 8802303134

Like? Yes | No

(10 years ago) "Other"

solve it.....
9,19,41,?,209

Reply Like? Yes | No

(10 years ago)

ans is 91
sol: 2^3+1, 2^4+1*3, 2^5+ 3*3 , 2^6 + 9*3 ...

Like? Yes (1) | No

(10 years ago)

2^3+3^0=9
2^4+3^1=19
2^5+3^2=41
2^6+3^3=91
2^7+3^4=209
so ans will be 91

Like? Yes (2) | No

(10 years ago) "Other"

Qn. The number of distinct triangles with integral valued sides if perimeter is 14.
a) 2 b) 3 c) 4 d) 5 e) 6

Reply Like? Yes (12) | No

(10 years ago)

c) 4 (3,5,6),(4,4,6),(5,5,4),(6,6,2)

Like? Yes (2) | No

(10 years ago)

(3,5,6),(4,4,6),(5,5,4),(6,6,2)
yes ans (c)

Like? Yes | No (1)

(10 years ago) "Other"

My score is
Module Name Module Score Module Percentile
English 420 29
Quantitative Ability 575 76
Computer Programming 665 99
Logical Ability 545 79
Computer Science 407 59

what r my chances of getting calls from companies??Please reply..

Reply Like? Yes | No

(10 years ago) "Other"

i want to attend the upcoming elitmus test.Please tell me on which subject should i concentrate and how should i prepare for elitmus

Reply Like? Yes | No (2)

(10 years ago) "Other"

hi friends my name is g.maharajan studing in kalasalingam university 1st year b.tech mechanical

Reply Like? Yes | No

(10 years ago) "Other"

given x=123456 and z=x-y then for how many values of y ,z value found is divide by 48,,98,105 ???

Reply Like? Yes | No

(10 years ago)

L.C.M of 48,98,105 is 11760.
123456/11760=10.49
so nearest least integer is 10.
Hence, for 10 values. ans

Like? Yes (2) | No

(10 years ago) "Other"

in how many ways can 44 people be divided into 22 couples

Reply Like? Yes (2) | No

(10 years ago)

(44c2)/2=473
so the ans will be 473

Like? Yes (4) | No (10)

(10 years ago)

43*22
so answer will be 946

Like? Yes (3) | No (5)

(8 years ago)

Short cut how many ways n people be divided into n/2 couples
(n!)/{(2!)n/2 (n/2)!} so ans is b. (44!)/{(2!)22 (22!)}

Like? Yes (7) | No (5)

(7 years ago)

Shortcut how many ways n people be divided into n/2 couples
(n!)/{(2!)n/2 (n/2)!} so ans is b. (44!)/{(2!)22 (22!)}

Like? Yes (3) | No (2)

(6 years ago)

n!/{2!*(n/2)(n/2)!}= 44!/{2!*22*22!}

Like? Yes (1) | No

(5 years ago)

I am assuming that by couples you meant pairs

No. of ways of selecting 1st pair = 44C2

No. of ways of selecting 2nd pair = 42C2

⋅

⋅

No. of ways of selecting 22nd pair = 2C2

∴ No. of ways of selecting 22 pairs =44C2⋅42C2⋅40C2…2C2

=44⋅432⋅42⋅412…2⋅12

=44!222

But the above also takes into account the order in which pairs are choosen which we do not want.

∴ we need to divide the above by 22! to take care of the permution.

Hence, No. of ways of selecting 22 pairs =44!22!⋅222

Thanks Stev Iones for correcting the error.

Like? Yes | No

(10 years ago) "Other"

how many rectangles can be formed out of a chess board? I need a proper explanation.

Reply Like? Yes | No

(10 years ago)

for a n*m chessboard, there are n+1 lines that form the rows and m+1 lines that form the columns. A rectangle will be bound by two of these rows and two of these columns, so the number of rectangles is given by (n+1C2)*(m+1C2).
as here n=m=8.
so, no. of rectangles = 9c2*9c2=36*36=1296

Like? Yes (1) | No

(10 years ago) "Other"

how many pairs of letters in word GOVERNMENT which has many letters in word as alphabet

Reply Like? Yes | No (2)

(10 years ago)

4 they are GM,OR,MN,RN

Like? Yes | No

to (10 years ago) "Other"

Q. In an election between two candidates , a candidate who gets 40% of total votes is defeated by 15000 votes. The number of votes polled by the winning candidate is ? WITH EXPLANATION

Reply Like? Yes (149) | No (35)

(10 years ago)

let the no. of votes polled= x.
given, 3x/5-2x/5=15000.
x=75000.
no. of votes polled for winning candidate is = 3x/5 =45000

Like? Yes (51) | No (22)

(10 years ago)

let total no of vote=x
according to the question candidate who got 40% vote,defeated by 15000 votes
that means(no of votes of winner-no of votes for losser=15000)
((60*x)/100)-(40*x)/100)=15000
after solving we got x=75000
no of vote polled by winning candidate=((3*75000)/5)=45000

Like? Yes (78) | No (19)

(10 years ago)

let total no. of votes be x.
then (x*40/100)+15000=x*60/100
total no votes =x=75000
So votes polled by winning candidate = 3*x/5=3*75000/5=45000 Ans

Like? Yes (31) | No (14)

(10 years ago)

We know in the election only two candidate participates .
A candidate who found 40% vote is defeated by 15000 votes
it show that that that the condidate defeated by 20% vote
20% votes =15000
thus the winning candidate polled 15000×3=45000 votes
Ans-45000 votes

Like? Yes (29) | No (14)

(10 years ago)

defeated candidate got 40% votes , winning candidate get 60%
difference b/w them is 20%=15000
so winning candidate get (60%)=3*15000=45000

Like? Yes (62) | No (10)

(9 years ago)

winning candidate got
45000

Like? Yes (7) | No (12)

(8 years ago)

let take two candidate as A and B
if A takes 40% then B takes 60%.difference is 20% which is nothing but 15000 votes.
20%=15000
60%=? (here i have taken 60% because it is asked to find the winning cand votes)
?=(15000*60)/20=45000

Like? Yes (38) | No (4)

(7 years ago)

in an election between two candidates, a candidate who obtained 7650 votes lost by a margin of 10% of total votes . Find the total votes? Please answer this question.

Like? Yes (34) | No (8)

to (10 years ago) "Other"

Q. if the price of wheat be raised by 30% , find by how much percent a house holder must reduce his consumption so as not number increase his expenditure ? WITH EXPLANATION

Reply Like? Yes (45) | No (16)

(10 years ago)

let x and y be the cost of the wheat and household consumption respectively.
expenditure= x*y.
new cost of wheat= 1.3x. Let new household consumption be a.
in order to not let the expenditure increase, x*y=1.3x*a
a=10y/13.
thus, consumption should decrease by = (3/13)*100%=23.07%

Like? Yes (24) | No (19)

(10 years ago)

direct formula= (R/(R+100))*100,
then, (30/130)*100=23.07%

Like? Yes (23) | No (5)

(10 years ago)

Let old price be 100
Then new price = 130
Consumption needs to be decreased by 30 which is in percentage (30/130)*100 = 23.07%

Like? Yes (64) | No (9)

(10 years ago)

assume
initially wheat 1kg=100/-
price increased by 30% means 1kg=130
how much wheat he is getting for 100 is x=(100*1000)/130=769.23 grams
consumption should decrease by 1000-769.23=230.7=23.07% of kg

Like? Yes (14) | No (6)

(5 years ago)

(r/r+100)*100
(30/30+100)*100
=23.07

Like? Yes (1) | No (3)

to (10 years ago) "Other"

Q. If the radius of a circle is decreased by 50%, its area is reduced by ...? WITH EXPLANATION

Reply Like? Yes | No

(10 years ago)

Let the radius be R.
new area = pi*(0.5R)^2
= 0.25*pi*(R^2).
% reduced = {(1-0.25)/1}*100 = 75%

Like? Yes (2) | No

(9 years ago)

for any 2 dimensional geometry figure the change in its area can be found bye (2x+(x)^2/100)
given area decreased ny 50% so (2(-50)+(-50)^2/100)
= -100+25
= -75%
the area reduced by 75%

Like? Yes | No

to (10 years ago) "Other"

Q. By mixing water a man gains the profit of ((100/9) %). Find the quantity of water mixed by him.
WITH EXPLANATION

Reply Like? Yes (16) | No

(10 years ago)

Let cp of milk =c and of water is 0.
sp of mixed milk = c
cp of mixed milk = 0.9c
let qty of water and milk be n1 and n2 respectively.
By rule of allegation,
n1/n2=(c-0.9c)/(0.9c-0)
i.e. n1/n2= 1/9
So, ratio of milk to water is 9:1

Like? Yes (1) | No (5)

(9 years ago)

Assume the quantity of milk is n1 @ rate of Rs x /unit
and quanity of water is n2
before mixing water the cost price of milk is n1 *x
after mixing water the cost price will be (n1+n2) *x
the profit will be
(n1+n2)*x- n1*x which will be equal to (100/9)%* n1 *x
so n2*X= (1100/9)*1/100*(n1*x)
n2*x=(1/9) n1*x
n2/n1=1/9
so the ratio of water and millk is 1 ratio 9

Like? Yes (6) | No (2)

to (10 years ago) "Other"

Q.I mixed some water in pure milk and the mixture is sold at the cost price of the milk. If I gained 16 ⅔% ,in what ratio did I mix water in the milk ? WITH EXPLANATION

Reply Like? Yes (68) | No (17)

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