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Maths Quotes

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

Unknown

As for everything else, so for a mathematical theory: beauty can be perceived but not explained.

Arthur Cayley

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"

I want the solution of question asked on 26 September with the explanation.... Plzz

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(10 years ago) "Other"

50 red and 50 black balls are to be distributed in 2 buckets. How should the distribution be done
so that if 1 ball is picked from each basket, the probability is maximum that both balls are of the
same color ?

Reply Like? Yes (3) | No

(10 years ago) "Other"

Please send me igate placement papers? email id -udaipurwala.ahsanali@gmail.com

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(10 years ago) "Other"

can any bady write a logic for following output
1 1
23 23
456 456
789 10 987
i need code for following o/p in C#

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(10 years ago) "Other"

Anybody attending IGATE campus pool at Rajiv Gandhi college on 1st OCT .../.? Mumbai

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to (10 years ago) "Other"

How to prepare for Elitmus? Suggest me any book please..

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(10 years ago) "Other"

can you please send me d tcs placement papers??? sachinbpulsar@gmail.com

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(10 years ago) "Other"

can 2013 passedout can write amcat or not pls help me out

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(10 years ago) "Other"

find last two digit of (1021^3921)+(3081^3921)?

Reply Like? Yes (2) | No

(10 years ago)

2*1,1=21+8*1,1=81=102 so 02

Like? Yes (5) | No (1)

(10 years ago)

2*1=2,8*2=16,21+61=82

Like? Yes | No (2)

(10 years ago)

answer is 02
as 3921=4n+1 so 1^1 is 1 for the first on i.e 1021^3921
for next part also its same 3921=4n+1
1^1 is 1
so total is 1+1=2 hence answer is 02

Like? Yes (1) | No

(10 years ago)

cyclic of 21 ie 5 and 81 ie 5
3921/5= remainder is 1 then cyclic of 21&81 are 21+81=102

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(10 years ago) "Other"

did any one get mail from ibm round two results conducted at Don Bosco college on 21st sep

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to (10 years ago) "Other"

call 0n 8867151045

Reply Like? Yes (4) | No

(9 years ago)

this is so cheap of u guys..:/

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(10 years ago) "Other"

41.45 ,41.5 ,42 ,18.23 ,18.2 ,18

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(10 years ago) "Other"

what is the difference between flat discount and normal discount?

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to (10 years ago) "Other"

hiii plz tell me how 2 crck the tcs atitude tes

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(10 years ago)

go on campus gate site enough.....

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(10 years ago) "Other"

my amcat score:
verbal-94
quants-80
logical-56
programming-100
ece-80
will i get calls???

Reply Like? Yes (2) | No

(10 years ago) "Other"

The letters of the word REGAIN when arranged in a dictionary, find the 32nd word???

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(10 years ago)

AGIERN.................
...............

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(10 years ago) "Other"

Statements : A) All bags are hats.
B) Some pins are bags.
C) No hats are needles.
Conclusions : I) Some pins are hats.
II) No needles are bags.
III) Some pins are needles.
IV) Some pins are not needles.
1) Only I and II follow
2) Only I and IV follow
3) I, II and IV follow
4) Either III or IV, and I follow
5) Either III or IV and I and II follow

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(10 years ago)

1 and 2 follow only.

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(10 years ago)

option 5 is corrct

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to (10 years ago) "Other"

hello miss priyanka .. would u pls tell me hw sud i start preparation fr amcat and tcs pprs. pls infom me on asheesh.ec08@gmail.com

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(10 years ago) "Other"

Friends i came to know that tcs people are asking puzzles in HR Round.
If anybody Having experience please post that questions

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

(9 years ago)

i think u have wrong information

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(9 years ago)

Pls sir send me some last year tcs papers on my e-mail id simranshanti53@gmail.com

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(10 years ago) "Other"

What is the 45 word in the perfect in a dictionary

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(10 years ago)

pnuemonoultramicroscopicsilicovolcanoconiosis

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(10 years ago)

pneumo$ultra$microsocopic$silico$volcono$coniosis

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to (10 years ago) "Other"

arranged on the basis weight

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(10 years ago) "Other"

The cost of 4 CD(s) is 4 more than the cost of a DVD. The cost of 1 CD(s) and a DVD is 10. What is the cost of a DVD?
Select one optionThe cost of 4 CD(s) is 4 more than the cost of a DVD. The cost of 1 CD(s) and a DVD is 10. What is the cost of a The cost of 4 CD(s) is 4 more than the cost of a DVD. The cost of 1 CD(s) and a DVD is 10. What is the cost of a

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(10 years ago)

dvd=7.2/-and cd=2.8/-

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to (10 years ago) "Other"

hiii.. miss chhaya i dnt hv any idea about level of aptitude of mncs like tcs pls suggest me ..wchich book shud be reffer to me.

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(10 years ago) "Other"

In a joint business, the capital of A, B and C were Rs. 45000, Rs. 30000 and Rs. 22500 respectively. A withdrew half of his capital after 4 months. After 9 months of this withdrawal, there was a total profit of Rs. 28400. Find the each share of profit.

Reply Like? Yes (1) | No

(10 years ago)

Rs. 10200, 10400 & 7800

Ratio of Investment of A:B:C=[45000*4 + (45000/2)*9] : [30000*13] : [22500*13]
=3825 : 3900 : 2925= 153 : 156 : 117
Share of A,B & C in the Profit of Rs. 28400= [153*28400/426] , [156*28400/426] & [117*28400/426]
= 10200 ,10400 & 7800 Rs.

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(10 years ago) "Other"

25% students of a class failed in Chemistry and 40% failed in Physics where 10% did not pass in any of the two subjects. If 30 students passed in only Physics, how many of them passed in both the subjects.

Reply Like? Yes (2) | No

(10 years ago)

i think answer is 12

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(10 years ago)

45%

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(10 years ago)

30 STUDENTS AM I RIGHT

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to (10 years ago) "Other"

Can you send me elitmus question paper?? My email id is karn.anuradha92@gmail.com

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(10 years ago) "Other"

Hello.do they give hints in elitmus paper for cryptarithmetic.pls reply

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(10 years ago) "Other"

Hi friends.. I m BE(CSE) student 2014 passed out.Please send the R-SAT model question paper with answer to this mail id lavanyasri13@gmail.com

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(10 years ago) "Other"

Hey friends... anybody know about the placement procedure of mckinsey company?.... pls tell me how should i prepare for it......

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(10 years ago) "Other"

4,5,15,49,201,1011,6073..... find odd one

Reply Like? Yes | No (1)

(10 years ago)

except 4 all are odd so 4 is odd one on the series .....

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(10 years ago)

4
it is the only even no.

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(10 years ago) "Other"

888,440,216,104,48,22,6..... find odd one???

Reply Like? Yes (5) | No (1)

(10 years ago)

22 is odd one 440+440+8=888,216+216+8=440,104+104+8=216,48+48+8=104,20+20+8=48,6+6+8=20 so 22is odd one.20 is the right answer

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(10 years ago)

num/2-4
888/2=444-4=440
440/2=220-4=216
216/2=108-4=104
104/2=52-4=48
48/2=24-4=20(Wrong ans)
ODD ONE IS 22.

Like? Yes (2) | No

(10 years ago)

22 is odd one,bcoz 888/2=444-4=440,
440/2=220-4=216....

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(10 years ago) "Other"

A class of 25 students took a science test. 10 students had an average (arithmetic mean) score of 80. The other students had an average score of 60. What is the average score of the whole class?

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(10 years ago)

(10*80+15*60)/25=68

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(10 years ago)

if u divide the student in two group 10 (avg 80) & 15 (avg 60)
there ratio will be 2:3
so ,average of them will be 68

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(10 years ago)

10*80=800
15*60=900
(900+800)/25=68

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(10 years ago)

Average score of whole class = 10*80 + 15*60 / 25 = 1700/25 = 68

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to (10 years ago) "Other"

A clock shows 3:00. What time is it after the hour hand rotates 135 degrees? I need complete solution? pls help me

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(10 years ago)

the required time is 7:12 because to move 130 degree it require to move up to 7 and then for 5 degree it need to movie 5 degree which is equal to move 12 minute sot ime is 7:12 after moving 135degree of hour hand

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(10 years ago)

7:30,hr hand rotates from 3 to 6 such that 90 degrees,i.e.,3 hrs,remaining 45 degrees is 1:30hrs

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(10 years ago)

for every hour hour hand moves 30 degrees =>135/30=4+15/30=>1hr=30degree=>1/2hr=15degree. Therefore 3+4+1/2hr=7:30hr

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(10 years ago)

yes its 7:30 in order to move 135* we move hour hand 90 degree as it reaches 6:00 and then we know each partition in clock is of 30* so we again move hour clock one hour as 90+30= 120* as 7 o clock. . to move rest 15* we move hour hand half partition as 15* which completes 135 * ans clock is now showing 7:30

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(10 years ago) "Other"

If 1/a + 1/b + 1/c = 1/(a+b+c) where a + b + c != 0 , abc != 0, what is the value of (a+b)(b+c)(c+a)?

Reply Like? Yes (1) | No

(10 years ago)

On multiplying with abc in both sides we get
bc+ca+ab=abc/(a+b+c)
On further solving we get,
2abc+a²b+ab²+b²c+bc²+ca²+c²a=0
(abc+ac²+b²c+bc²)+(a²b+a²c+ab²+abc)=0
c(ab+ac+b²+bc)+a(ab+ac+b²+bc)=0
(c+a)(ab+ac+b²+bc)=0
(c+a){a(b+c)+b(b+c)}=0
(c+a)(b+c)(a+b)=0
So Answer is ZERO

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(10 years ago) "Other"

Anand, Babu, Charlie, Dhanush, and Eesha recently found out that all of their birthdays were on the same day, Though they were born in different years ,On their birthday, they were chatting about their ages
- Dhanush said to Babu “I am nine years older than Eesha”
- Eesha said to Babu “I am seven years older than Anand”
- Babu said to Charlie “Eesha is younger than you”
- Anand Said to Babu “ Your age is exactly 70% greater than my age”
- Charlie said to Dhanush “The difference between our ages is six years”
- Charlie said to Anand “I am ten years older than you”
- Charlie said to Anand “Babu is younger than Dhanush”
- Babu said to Charlie “The difference between your age and Dhanush’s is the same as the difference between Dhanush’s and Eesha’s” They were not telling the truth, When each one of them spoke to someone older, everything they said was true,But, when speaking to someone younger, everything they said was false. How old was Eesha?

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(10 years ago) "Other"

ICICI bank offers 5% compound interest calculated on half-yearly basis. A user deposits Rs. 1600 each on 1st Jan and 1st July of a year. At the end of the year, the amount he would have gained is:

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(10 years ago)

A=P(1+{r/2}/100)^(2n) where n is no. Of years
So
A=1600(1+{5/200})²+1600(1+{5/200})¹
A=1600×(41/40)²+1600×(41/40)
A=1600×{41/40}{1+(41/40)}
A=332Inter
So
Gain or Interest= 3321-3200
= 121 Rs.

Like? Yes (1) | No (1)

(10 years ago) "Other"

78% consumers selected at least one brand among A, B and C brands during a brand survey. In it, 50% favoured Brand A;30% favoured Brand B and 20% favoured Brand C. If 5% of those favoured all brands, what percentage of consumers favoured more than one of the three brands?

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(10 years ago)

78=50+20+30-3x+5
x=9%

Like? Yes | No (1)

(10 years ago) "Other"

Three numbers are in the ratio of 2 : 3 : 4 and their L.C.M. is 240. Their H.C.F. is:

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(10 years ago)

Let the numbers be 3x, 4x and 5x.

Then, their L.C.M. = 60x.

So, 60x = 2400 or x = 40.

The numbers are (3 x 40), (4 x 40) and (5 x 40).

Hence, required H.C.F. = 40.

Like? Yes | No (1)

(10 years ago)

hcf is 20 2x:3x:4x ==lcm=12x ==x=20

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(10 years ago) "Other"

Reply Like? Yes (1) | No

(10 years ago) "Other"

A vessel is filled to its capacity with pure milk. Ten litres are withdrawn from it and replaced by water. This procedure is repeated again. The vessel now has 32 litres of milk. Find the capacity of the vessel (in litres).

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(10 years ago)

quantity of pure liq remained afer 2 itirations,quantity of pure liq remained=x*(1-y/x)^n
where y amount of liq replaced ,x quantity of pure liq or capacity of vessel
n number of repeations
so,32=x*(1-(10/x))^2
on solvingx=50 or 2 as it cant be 2 lit the ans will be x=50 lit

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(10 years ago) "Other"

a team won 80 of the games is played. it played 5 more games of which it won 3 and lost 2. its loss percentage changed to 25%. how many such possibilities are there

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(10 years ago)

80%(x)+3 = 75%(x+5)

ans is 20

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(10 years ago) "Other"

box of fruits can be loaded in truck in 9 min by a worker and 8 boxes fill a truck completely. How many trucks can be loaded completely in 1 and a 1/2 hours if there are 10 men working together?

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(10 years ago)

one man can fill a truck in 72 mins(for 1 box-9 min...so for 8 box 72 min)
10 men can fill atruck in 7.2 mins
so in 90 min (90/7.2=12.5) 12.5 trucks can be filled

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(10 years ago) "Other"

Moli buys 3 ribbons,7 clips and 1 soap for Rs.120 exactly. At the same place it would cost Rs.164 for 4 ribbons, 10 clips and one soap. How much would it cost for one ribbon, one clip and one soap?

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(10 years ago)

3R+7C+S=120---------(a)
4R+10C+S=164---------(b)
on multiplying eqn (a) with 3 and eqn (b) with 2 ;
3a-2b=>R+C+S=3*120-2*164=32

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(10 years ago) "Other"

nothing to share

Reply Like? Yes (1) | No

(10 years ago) "Other"

How to know which fraction is greater? any quick tricks??

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(10 years ago)

let check bw 13/21 & 3/11
using cross multiply
A=13*11=143
B=21*3=63
so 1st one is greater(BCOZ A IS GREATER)
if B WAS GREATER THAN 2ND ONE WILL THEN GREATER

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(10 years ago) "Other"

Sinha, Kripa and Shwetha are three anchors for three different Television shows. A survey shows that 30%,20% and 85% of the people watch Sinha, Kripa and Shwetha shows respectively.20% people watch exactly 2 of the 3 channels and 5% watch none.

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(10 years ago) "Other"

please send IBM latest placement papers in pdf

Reply Like? Yes (1) | No

(10 years ago) "Other"

8+88+888+.....+8888+....8888. There ate 21"8" digits in the last term of the serious. Fint the 3 digit of the sum? if any one know
Please send me the complete solution.

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(10 years ago)

please provide infosys paper

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(10 years ago)

Just multiply from the last term...
They asked for upto 21st term
simply multiply with 8.
21*8=168
20*8=160
19*8=152
Take the unit digit of all values from bottom to top 208 is your Answer....

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(10 years ago)

carry over must also be considered.

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to (10 years ago) "Other"

can u pls send me any previous written test papers of ibm....

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

(10 years ago) "Other"

How many different integers can be expressed as the sum of three distinct numbers from the set {3, 10, 17, 24, 31, 38, 45, 52}?
a) 396 b)402 c)296 d)426

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(10 years ago)

no of terms=?
so d=7 ,a=30,tn=135
tn=a+(n-1)d
135=30+(n-1)7
135-30+7=7n
112=7n
n=16 terms

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