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TCS Placement Questions & Answers :: TCS

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Choose the correct option.

I lost my wallet and the money in that. But I remember that before I lost my wallet I purchased two things. First one I purchased by paying 10% of what in my wallet and also for second one I also pay 10% of what has been left in my wallet, that is equal to 9. Then how much money I lost?


A81

B54

C63

D25

Answer: Option A

Explanation:

Assume Lets total amount = 'x'
10% is spent on 1st item
=> amount spent on 1st item = x*(10/100) = x/10
So, amount left = x-(x/10) = 9x/10
Given: %of amount spent on 2nd item = 10%
Amount spent on 2nd item = 9
So, amount spent on 2nd item = (9x/10)*(10/100) = 9
=> x =100
Money left in the wallet = money lost
x-(x/10)-9 = money lost
100-(100/10)-9=81

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SHSTTON
5
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2
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7
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If the area of a square region having sides of length 6 cms is equal to the area of a rectangular region having width 2.5 cms, then the length of the rectangle, in cms, is?


A41

B14

C14.4

D13

Answer: Option C

Explanation:

area of square region = area of rectangular region
side*side=length*width
6*6=2.5*length
hence length=(6*6)/2.5
14.4 square cm

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NA
SHSTTON
15
Solv. Corr.
15
Solv. In. Corr.
30
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If a, b and c are forming increasing terms of G.P., r is the common ratio then find the minimum value of (c-b), given that (log a+log b+log c)/log 6 = 6.
Note that r can be any real no.


A36

B24

C12

D18

Answer: Option A

Explanation:

(log a + log b + log c)/log 6 = 6
(log abc )/log 6 = 6
log6 abc=6
abc = 6^6
From gp series a/r * a * ar =6^6
a^3= 6^6
a=36
so, a= 36/r, b=36, c=36r
c-b = 36r-36
=36(r-1)
Given r can be real number.

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NA
SHSTTON
2
Solv. Corr.
3
Solv. In. Corr.
5
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The ratio between the number of sheep and the number of horses at the Stewar farm is 4 to 7. If each of horse is fed 230 ounces of horse food per day and the farm needs a total 12880 ounces of horse food per day. what is number sheep in the form??


A18

B28

C32

D56

Answer: Option C

Explanation:

Lets assume no. of sheep and horses are 4k and 7k
No. of horses= 12880/230 = 56
Now 7K = 56 and k = 8
No. of sheep = (4*8) = 32

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SHSTTON
11
Solv. Corr.
12
Solv. In. Corr.
23
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3 dice are rolled. what is the probability of getting sum as 13?


A21/216

B1/216

C15/216

D1/36

Answer: Option A

Explanation:

(6,6,1)=3 ways
(6,5,2)=6 ways
(5,5,3)=3 ways
(4,4,5)=3 ways
(6,4,3)=6 ways

Hence total ways = 21
So, probability = 21/(6*6*6) = 21/216

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NA
SHSTTON
10
Solv. Corr.
12
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22
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On selling mangoes at 36 for a rupee, a shopkeeper loses 10%. How many mangoes should he sell for a rupee in order to gain 8%?


A30

B43

C23

D33

Answer: Option A

Explanation:

Selling price of one mango = 1/36
New selling price = (1/36)*(108/90) = 1/30
So,for 1?, he should sell 30 mangoes.

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NA
SHSTTON
16
Solv. Corr.
14
Solv. In. Corr.
30
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Find the number of zeros in the expression:

15*32*25*22*40*75*98*112*125


A1

B6

C9

D7

Answer: Option C

Explanation:

Do the multiple of Numbers as below:

15 = 3*5
32 = 2*2*2*2*2
25 = 5*5
22 = 2*11
40 = 2*2*2*5
75 = 5*5*3
98 = 2*7*7
112 = 2*2*2*2*7
125 = 5*5*5
you will get 0 when 2 is multiplied by 5
and total no. of 2's are 14 and 5's are 9
so no. of zeroes is according to 5 as it is minimum.
so, answer will be 9

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SHSTTON
3
Solv. Corr.
6
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Three partners X,Y, Z start the business. Y's capital has been four times Z's capital also twice X's capital has been equal to three time Y's capital. In case total profit has been Rs. 16500 at end of the year. Find out Y's share in it.


ARs. 9000

BRs. 6000

CRs. 1500

DNone of these

Answer: Option B

Explanation:

As per questions:
Y's capital has been four times Z's capital
Y=4Z ---(i)

twice X's capital has been equal to three time Y's capital
2X=3Y =>Y= 2X/3 ---(ii)

To get the ratio of X, Y, Z.

From (i) & (ii)
2X/3 = 4Z => Z=X/6
So X : Y : Z = X : 2X/3 : X/6 = 6 : 4 : 1
So, Y's share in Rs. 16500 = (4/11)*16500 =Rs. 6000

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NA
SHSTTON
7
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12
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The current age difference between two persons is 25. 9 years before the elder one's age was 6 times that of the younger one. What is sum of their current ages?


A39 Years

B14 Years

C25 Years

D53 Years

Answer: Option D

Explanation:

Lets assume younger age = x Years.
So, elder age will be (as per question) = (x+25) years.
Given:
(X+25)-9 = 6(X-9)
By Solving the above eqaution
=> x=14 whicjh is the age of younger
elder = 25+14 = 39 years.

sum of their current ages = 39+14 = 53

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SHSTTON
10
Solv. Corr.
11
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21
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A person travels from Chennai to Pondicherry in cycle at 7.5 Kmph. Another person travels the same distance in train at a speed of 30 Kmph and reached 30 mins earlier. Find the distance.


A5 Km

B10 Km

C15 Km

D20 Km

Answer: Option A

Explanation:

Let the distance be x kms.
then A/Q,
x/(7.5) - x/(30) =30/60 => x= 5 Km.

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