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

Unknown

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

Dean Schlicter

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Vipul Chavan 4 years ago

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yash mittal 5 years ago

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(10 years ago) "Other"

Can anyone tell me about how to practice email writing section of TCS paper and where i will check my grammar ?
Please help me guys...

Reply Like? Yes (2) | No

(10 years ago) "Other"

There is a die with 10 faces. It is not known that fair or not. 2 captains
want to toss die for batting selection. What is the possible solution among
the following?
a) If no. is odd it is head, if no. is even it is tail
b) If no. is odd it is tail, if no. is even it is head
c) Toss a die until all the 10 digits appear on top face. And if first no. in the
sequence is odd then consider it as tail. If it is even consider it as head.

How c is the answer explain it.

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(10 years ago) "Other"

A toy train produces 10 different sounds when it moves around a circular

toy track of radius 5 m at 10 m per min. However, the toy train is defective

and it now produces only 2 different tunes at random. What are the odds

that the train produces for consecutive music tones of the same type?

a) 1 in 16 B) 1 in 4 c) 1 in 8 d) 1 in 32

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(10 years ago)

Initially it produces 10 sounds and the defect came and now it produces only 2 different sounds and consecutively so there are totally 2 sounds and we have to select on sound and the probability is ½ and it produces the same sound concecutively for 2 times so the probability becomes ½*1/2 ie ¼

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(10 years ago) "Other"

Hey , can any one tell me the best way to solve the Probability Problems ?

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(10 years ago) "Other"

can anyone send First Amercian india Pvt Ltd interview questions papers to anbarasansel@gmail.com

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(10 years ago) "Other"

what is the cut off for cts aptitude test round?

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(10 years ago) "Other"

When all words in “master” is sorted in alphabetical order then what is the 49th word.

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(10 years ago) "Other"

When all words in “master” is sorted in alphabetical order then what is the 49th word.

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(10 years ago) "Other"

what is the cut off for tcs apti round?

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(10 years ago)

i think upto 30

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to (10 years ago) "Other"

plz solve it
intregation of (cos5x+ cos4x )/(1 - 2cos2x)

Reply Like? Yes (1) | No

(10 years ago)

(cos5x+ cos4x )/(1 - 2cos2x)

= 2*cos(9x/2)*cos(x/2) / (3 - 4cos^2x)

= -2cosx*cos(9x/2)*cos(x/2) / cos3x

i think its itegration can't be evaluated or can be in terms of inverse hyperbolic fns
is the qn right??

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(10 years ago)

ya que is right it think cos5x or cos4x is to be argest like cos5x = cos3x + cos2x .....this make the solution easy can u try one more time ?????

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(10 years ago)

tell its answer......i will try

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(10 years ago)

sorry i hvn't..........

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(10 years ago)

ok.....
u can't find integration of each integrals.

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(10 years ago)

thanks rakesh i hv solved

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(10 years ago)

can u post the soln, how u solved?

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(10 years ago) "Other"

solve it
intregation of (cos5x+ cos4x )/(1 - 2cos2x)

Reply Like? Yes (2) | No

(10 years ago) "Other"

what is the number of distinct terms in the expansion (a+b+c)^20 ?

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(10 years ago)

22c2 ---ANS...for addition of any three no. raise to power something will have ---(something+2)c2 no. of distinct terms

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(10 years ago) "Other"

hai friends, anybody send me the tcs question paper to my id amativeanil05@gmail.com

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(10 years ago) "Other"

11. There are two boxes, one containing 10 red balls and the other containing 10 green balls. You
are allowed to move the balls between the boxes so that when you choose a box at random and a
ball at random from the chosen box, the probability of getting a red ball is maximized. This
maximum probability is?

Reply Like? Yes | No

(10 years ago)

the probability for selecting red box is 1/2 but randomly if we select green box, the probability will be 0.
so, total probability for this case is 0.5.

now consider the other case, 9 red balls are transferred to green ball box. now total balls in that box will be 19.

total probability = probability to select 1st box + probability to select 2nd box

= (1/2)*(1C1/1C1)+(1/2)*(9C1/19C1)

= (1/2)*(1+9/19)

= (1/2)*(28/19)

= 14/19

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(10 years ago) "Other"

Hello hai friends,,,,,,im new to m4maths.....this helps evry one to improve their skills...itzz simpli rocking

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(10 years ago) "Other"

Did any body got TCS Hall ticket applied before july 14 2014 for 2014 passouts offcampus. plz reply....

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to (10 years ago) "Other"

a^n + b^n is divisible by (a+b) when n is odd but if n is even then what is the procedure to solve the question????

Reply Like? Yes (1) | No

(10 years ago) "Other"

A lady has fine gloves and hats in her closet- 18 blue 32 red and 25 yellow. The lights are out and it is totally dark. inspite of darkness she can make out the difference between a hat and a glove. She takes out an item out of the closet only if she is sure that it is a glove. How many gloves must she take out to make sure that she has a pair of each colour?

Plz explain answer clearly.

Reply Like? Yes | No

(10 years ago)

It is not given that how many of these items are gloves and how many are hats, if we consider that all the items are gloves then according to my opinion 32+25+2 = 59 gloves, she must take out to make sure she has a pair of each color.

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(10 years ago) "Other"

Anybody want to practice verbal ability section for tcs, make use of technicalbaba website... its very useful....

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(10 years ago) "Other"

A permutation is often represented by the cycles it has. For example, if we permute the numbers in the natural order to 2 3 1 5 4, this is represented as (1 3 2) (5 4). In this the (132) says that the first number has gone to the position 3, the third number has gone to the position 2, and the second number has gone to position 1, and (5 4) means that the fifth number has gone to position 4 and the fourth number has gone to position 5. The numbers with brackets are to be read cyclically.
If a number has not changed position, it is kept as a single cycle. Thus 5 2 1 3 4 is represented as (1345)(2).
We may apply permutations on itself If we apply the permutation (132)(54) once, we get 2 3 1 5 4. If we apply it again, we get 3 1 2 4 5 , or (1 2 3)(4) (5)
If we consider the permutation of 7 numbers (1457)(263), what is its order (how many times must it be applied before the numbers appear in their original order)?
a. 12
b. 7
c. 7! (factorial of 7)
d. 14

Reply Like? Yes (1) | No

(10 years ago) "Other"

A mans basic pay for 40 hrs. week is rs.200. overnight is paid at 25% above the basic rate. in a certain week he worked overtime and his total was rs. 300. then how many hrs. he worked. " plz provide sln. i m unable to solve."

Reply Like? Yes | No

(10 years ago)

56 hours

*considering 'overnight' & 'overtime' mentioned here is same then,
Basic pay/hour of week= 200/40 =5 Rs.
Overtime pay/hour=(125/100)*5=25/4 Rs.
If man works for 'x' extra hours in a week & considering all working hours more than 40 as overtime, then
40*5 +(25/4)*x=300 , x=16
So total hours he worked=40+16= 56

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(10 years ago)

the extra money he got=rs.100
200 per 40hr
for 1 hr 200/40=5
25% of 5 =1.25
overtime pay per hr=5+1.25=6.25
overtime hr=100/6.25=16
total hr=40+16=56

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(10 years ago) "Other"

what is the remainder when 4^106 is divided by 6 ?

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(10 years ago)

ans:4
{
4^(any even number) gives us 6 as unit digit.
Ex: 4*4=16
4*4*4*4=256
4*4*4*4*4*4*4*4=65536
All these numbers leave 4 as the remainder when divided with 6.
}

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(10 years ago) "Other"

325^325/125^n
325^325 = 325*325*325.................325 times
and 125 = 5*5*5
also 325 = 5*5*13 (2 fives)
in 325 times 325 we have 5^(2*325) which we can write in (5^3)^216
so the answer is 216

explain anyone this term-- we have 5^(2*325) which we can write in (5^3)^216

Reply Like? Yes | No

(10 years ago)

5^(2*325)=5^650
(5^3)^216=5^648
but if we put 217 instead of 216...it'll be 651>650
so we took 650
*I really don't understand the qus. but I think the ans. is what U seek has nothing to do with it

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(10 years ago) "Other"

A triangle is made from a rope. The sides of the triangle are 25 cm, 11 cm and 31 cm. What will be the area of the square made from the same rope?
a) 280.5625 b) 240.5625 c) 280.125 d) 240

Explain this answer.

Reply Like? Yes (2) | No

(10 years ago)

perimeter of triangle=25+11+31=67
now,perimeter of square=4a=67
therefore a=16.75
i.e area of square=16.75*16.75=280.5625(a)

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(10 years ago)

length of rope=perimeterof triangle=25+11+31=67
side of square=67/4=16.75
area=16.75^2=280.5625
ans:A

Like? Yes (1) | No

(10 years ago)

perimeter of the triangle is : 25+11+31= 67
perimeter of the square is : 4*side which will be equal to perimeter of the triangle
so, 4*side=67
=> side=16.75
since the area of the square will be : side*side
=> 16.75*16.75 = 280.5625
i.e. option (A) is correct

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(10 years ago) "Other"

How to find dummy questions in tcs apt test???

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(10 years ago)

Visit this site https://nextstep.tcs.com , just register your account and Trial Test is there for preparation...This site is operated by TCS itself....

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to (10 years ago) "Other"

how can we find out sum of digits like 6^2015 or like 7^1686 and in the same way any general solution for these type of questions

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to (10 years ago) "Other"

how can we find out sum of digits like 6^2015 or like 7^1686 and in the same way any general solution for these type of questions

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to (10 years ago) "Other"

how can we find out sum of digits like 6^2015 or like 7^1686 and in the same way any general solution for these type of questions

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(10 years ago)

i think , there is no general method for these qns
for some qns u can find it

ex- 5^2010*8^673
= (5^3)^670 * 8^670 * 8^3
= (5^3 * 8)^670 * 512
= 512 * 1000^670
= 51200000000000000000000....(2010 zeroes)
=> sum of digits = 5+1+2 = 8

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(10 years ago) "Other"

How many positive integers less than 10,000 are there in which the sum of the digits equals 5?

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(10 years ago)

I believe the answer to be C: 56.

Basically, the question asks how many 4 digit numbers (including those in the form 0XXX, 00XX, and 000X) have digits which add up to 5. Think about the question this way: we know that there is a total of 5 to be spread among the 4 digits, we just have to determine the number of ways it can be spread.

Let X represent a sum of 1, and | represent a seperator between two digits. As a result, we will have 5 X's (digits add up to the 5), and 3 |'s (3 digit seperators).

So, for example:

XX|X|X|X = 2111
||XXX|XX = 0032

etc.

There are 8C3 ways to determine where to place the separators. Hence, the answer is 8C3 = 56.

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(10 years ago)

mr. anand i don't give any option
ur ans is copy from url
http://gmatclub.com/forum/how-many-positive-integers-less-than-10-000-are-there-in-85291.html

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(10 years ago) "Other"

If a + b + c = 0, then (a3 + b3 + c3) ÷ abc is equal to:

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to (10 years ago) "Other"

Hi Rakesh,
TCS is coming to our campus on September 1st.So can you please send me TCS placement papers to my mail id maheshniceboy@gmail.com as soon as possible.
Thanks in advance.

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(10 years ago)

http://www.m4maths.com/placement-puzzles.php?SOURCE=TCS

its enough.....

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(10 years ago) "Other"

An Inspector rejects 0.08% of the article as defective. How many will he examine to reject 2 articles?
a. 2500
b.2800
c.2600
d.2100
e.2300

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(10 years ago)

200/0.08=2500
is it right?

Like? Yes (2) | No

(10 years ago)

let x article examine.
then defective article is x*0.08%
a/q ... x*0.08%=2
x=20000/2=2500(a)

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(10 years ago)

let the total articles be : x
now, 0.08% of X be 2
i.e. (0.08/100)*X=2
i.e. x=200/0.08
which is 2500
hence (a) is correct

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(10 years ago) "Other"

The ratio between the third proportional of 12 and 30 and mean proportional of 9 and 25 is:

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(10 years ago)

3rd proportional of 12 and 30 is
12 : 30 = 30 : x
x=75
mean proportional of 9 and 25 is sqrt (9*25) ie 15
ratio = 75 : 15 i.e., 5 : 1

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to (10 years ago) "Other"

calculate divisior first things calculate factor of given number and then add 1 all factor and multiply;
eg 4=2*2
no of divisior =2^2=2+1=3

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to (10 years ago) "Other"

sir pls ans for this tooo
Fill in the blanks
Q1) History _______ instances of men ______ with
the strongest capacity for business but who all
their lives never rose to fame and money.
1)provides, preoccupied 2)supplies, bemused
3)offers, content 4)furnishes, gifted
5)generates,familiar.
Q2)Macbeth is tragedy of a man who was ______
with great qualities but ______ from the path of
honour.
1)endowed,deserted 2)cultivated,lamented
3)possessed,mitigated 4)imposed,deflated
5)absorbed,deviated.
Q3) All our ancient scriptures have ______ echoed
that the supreme purpose of life is the awareness
of the self that ______ the body.
1)cleverly,facilitates 2)forcefully,purifies
3)judiciously,migrants 4) purposefully,projects
5)passionately, transcends.
Q4) He who is governed by ______ rather than
impulse is truly wise. An ounce of ______ they say,
is better than an pound of wit.
1)devotion,thought 2)prudence,discretion
3)temperament,logic 4)acumen,emotion
5)intelligence,repression
Q5)The self-reliant man is patient and _____ . He
does not _____ or complain and abandon his goal
halfway.
1)amenable,abstain 2)prolific,refuse
3)proactive,relapse 4)persevering,cringe
5)particular,recoil

Reply Like? Yes | No

(10 years ago) "Other"

.A girl entered a store and bought x flowers for y dollars (x and y are
integers). When she was about to leave, the clerk said,If you buy 10 more
flowers I will give you all for $2, and you will save 80 cents a dozenâ€.
The values of x and y are:
A. (15,1)
B. (10,1)
C. (5,1)
D. Cannot be determined from the given information

Reply Like? Yes (1) | No

(10 years ago)

answer is: c
exp:

option1--Put the options 15 >10 so 10 for $1 instead 15 is loss ...ignored
option 2---10 for $1 and 10 for $1 is no discount so ignored
option 3---5 for $1 so 15 for $3
but the clerk'll take $2
so profit $1..................(1)
for 12 flowers profit should be $0.8
so,for 15,$1.......................................................(2)
hence

answer (5,1)

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(10 years ago) "Other"

april 7,1999 is wednessday,then march 14,1993 which day???
option-(thursday,tuesday,saterday,sunday)

Reply Like? Yes | No

(10 years ago)

diff in years b/t april7,1999 and april 7,1993 is 6

and leap year 1996

so,as one less year one less day so total 7days loss

is

wed-7 days=wednesday

so,april7,1993 is wednesday

again day diff b/w april 7 and march 14 is 25

25%7=4

wed+4 days=sunday

answer:sunday

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(10 years ago) "Other"

pls tell me that cryptography is important topic for elitmus preparation??

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(10 years ago)

yes
but don't worry
u can leave this topic because attempting 8-10 out of 20 question in reasoning is sufficient

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(10 years ago) "Other"

what is the value of x+y if x^y + y^x = 57?

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(10 years ago)

ans is 7 where x,y = 2,5 then x+y=7

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(10 years ago)

1^56+56^1 =1+56= 57
therefore x=1 , y= 56
x+y=1+56=57 ans

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(10 years ago)

plz describe lokes .

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(10 years ago) "Other"

Hello friends ,
I want to know direct interview criteria of TCS?

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(10 years ago) "Other"

plz help me friends to clear tcs
if you have any previous papers
can u pls send to my mailid sasijetty414@gmail.com

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(10 years ago) "Other"

5^2010
what will be the sum of digits?

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(10 years ago)

answer will be 6031

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(10 years ago) "Other"

please help me friends... plz send me TCS and Elitmus latest paper on email ID anujtech64@gmail.com..

Reply Like? Yes (1) | No

(10 years ago) "Other"

For tcs written test, is it compulsory to study agarwal book?? please suggest me the topics to be covered for written test...

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to (10 years ago) "Other"

what are you doing

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to (10 years ago) "Other"

pls tell me how to solve 3 variable eqn easily w/o using calculators

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(10 years ago)

swaroopachandra 3 variable eqn can solve by elimination and subtitution i prefer use elimination it is easy way 2 solving a qn...plz send me qn my emailid bhardwajatul123@gmail.com and i solve ur qn in easy way if possible for me :)

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to (10 years ago) "Other"

hai this is naveen.What about u

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(10 years ago) "Other"

find the VALUE IN series...............O T T F F S S E_ _

Reply Like? Yes (3) | No

(10 years ago)

Answer is "N", and "T"

O - One
T - Two
T - Three
F - Four
F - Five
S - Six
S - Seven
E - Eight
N - Nine
T - Ten

Every letter is the beginning of each number starting from 1

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(10 years ago)

answer:N T

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(10 years ago) "Other"

find the odd man out?
212,331,824,632,422,121

Reply Like? Yes (4) | No

(10 years ago)

.......................121

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(10 years ago)

explain with reason

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(10 years ago)

121 is the wrong..
212 => 2=2*1
331 => 3=3*1
842 => 8=4*2
632 => 6=3*2
422 => 4=2*2

that is first no is mutiple of other 2

Like? Yes (4) | No

(10 years ago)

121 is odd in 212,331,824,632,422,121

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(10 years ago) "Other"

find the odd man out?
165,275,341,583,493

Reply Like? Yes | No

(10 years ago)

its...................... 493

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(10 years ago)

explain with reason pls

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(10 years ago)

493 is d odd man

165 => 6-5=1
275 =>7-5=2
341 =>4-1=3
583 =>8-3=5
693 =>9-3=6...693..
ie 1st no is the diffrence of other 2
thus
493 is d odd man...

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(10 years ago)

kushagra ur answers were nice i like it n thank u.will u suggest me how to be perfect in reasoning and also in aptitude

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(10 years ago)

middle=left+right
so,
165->1+5=6
and so on but 493 it addition is 7
so ans:493

Like? Yes | No (1)

(10 years ago)

5+1=6=>165
2+5=7=>275
3+1=4=>341
5+3=8=>583

493 IS ODD

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