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# TCS Placement Questions & Answers :: TCS

271.33K

## Total Qs: 649+

NA
SHSTTON
29
Solv. Corr.
32
Solv. In. Corr.
61
Attempted
1 M:45 S
Avg. Time

81 / 649

Choose the correct option.

A persons salary is decreased by steps of 20%, 15% and 10%. What will be the percentage decrease, if the salary is decreased in a single shot?

A38.00%

B38.80%

C48.80%

D28.00%

Explanation:

decrease in salary in single shot =38.8%
first decease =20% let the salary be 100 then it will become 80
2nd decrease is= 15%. 15% of 80 =12 then salary become 68
3rd decrease is of 10% . 10% of 68 =6.8.then salary become 61.2
so overall decrease=38.8%

Tags: TCS

NA
SHSTTON
7
Solv. Corr.
24
Solv. In. Corr.
31
Attempted
0 M:0 S
Avg. Time

82 / 649

A man speaks truth 3 out of 4 times. He throws a die and reports it to be a 6.What is the probability of it being a 6?

A8-Jul

B8-Jan

C8-Mar

D8-May

Explanation:

Probability that the die does not report 6, and he is telling the truth: (5/6)*(3/4)=5/8
Therefore, Probability that the die reports 6 = 1-(5/8) = 3/8

Tags: TCS

NA
SHSTTON
10
Solv. Corr.
18
Solv. In. Corr.
28
Attempted
0 M:0 S
Avg. Time

83 / 649

Choose the correct option.

How many three digit numbers can be form from digit 1-9 strictly in increasing order and follows an A.P.

A9

B14

C16

D12

Explanation:

numbers are 123 135 147 159 234 246 258 345 357 369 456 468 567 579 678 789

Tags: TCS

NA
SHSTTON
4
Solv. Corr.
3
Solv. In. Corr.
7
Attempted
0 M:0 S
Avg. Time

84 / 649

In each of the following questions two statements are given. Which are followed by four conclusions I, II, III, and IV. Choose the conclusions which logically follow from the given statements.

Statements:
All green are blue.
All blue are white.

Conclusions:
I. Some blue are green.
II. Some white are green.
III. Some green are not white.
IV. All white are blue.

AOnly (i) and (ii)

BOnly (i) and (iii)

COnly (i) and (iv)

DOnly (ii) and (iv)

Explanation:

Here is no explanation for this answer

Tags: TCS

NA
SHSTTON
12
Solv. Corr.
13
Solv. In. Corr.
25
Attempted
0 M:0 S
Avg. Time

85 / 649

Choose the correct option.

J is faster than P. J and P each walk 24 km. Sum of the speeds of J and P is 7 kmph. Sum of time taken by them is 14 hours. Then speed of J is equal to

A5 kmph

B2 kmph

C4 kmph

D7 kmph

Explanation:

As per the question: J > P ---(1)
and J + P = 7 ----- (2)
So, the below option can satisfy above both eq. (1) & (2)
(6, 1), (5, 2), (4, 3)
sum of time taken by them = 14 hrs. ---- (3)
To satisfy the 3rd condition

If J = 4 and P = 3.
Times taken by them = 24/4 + 24/3 = 14.

Tags: TCS

NA
SHSTTON
78
Solv. Corr.
63
Solv. In. Corr.
141
Attempted
4 M:22 S
Avg. Time

86 / 649

Find the missing in the series: 70, 54, 45, 41,__.

A40

B37

C39

D33

Explanation:

70-54 = 16 = 4^2
54-45 = 9 = 3^2
45-41 = 4 = 2^2
41-40 = 1 = 1^2.

Tags: TCS

NA
SHSTTON
12
Solv. Corr.
14
Solv. In. Corr.
26
Attempted
0 M:0 S
Avg. Time

87 / 649

Choose the correct option.

(2/3) of a number is 4 more than the (1/6) of the same number?

A6

B8

C36

D34

Explanation:

Here is no explanation for this answer

Tags: TCS

NA
SHSTTON
3
Solv. Corr.
6
Solv. In. Corr.
9
Attempted
0 M:0 S
Avg. Time

88 / 649

There are two water tanks A and B, A is much smaller than B. While water fills at the rate of 1 liter every hour in A, it gets filled up like, 10, 20, 40, 80, 160 in tank B. (At the end of first hour, B has 10 liters, second hour it has 20 liters and so on). If tank B is 1/32 filled of the 21 hours, what is total duration of hours required to fill it completely?

A26

B25

C5

D27

Explanation:

for every hour water in tank in B is doubled,
Let the duration to fill the tank B is x hours.
x/32 part of water in tank of B is filled in 21 hours,
Next hour it is doubled so,
2*(x/32) part i.e (x/16) part is filled in 22 hours,
Similarly (x/8)th part in 23 hours,(x/4)th part is filled in 24 hours,
(x/2)th part is filled in 25 hours, (x)th part is filled in 26 hours

Tags: TCS

NA
SHSTTON
9
Solv. Corr.
23
Solv. In. Corr.
32
Attempted
0 M:0 S
Avg. Time

89 / 649

Choose the correct option.

6 persons standing in queue with different age group, after two years their average age will be 43 and seventh person joined with them. Hence the current average age has become 45. Find the age of seventh person?

A43

B69

C52

D31

Explanation:

Total age of 6 persons is x hours,after two years total age of 6 persons is x+12
Average age of 6 persons is after two years is 43
So (x+12)/6=43 => x = 246 ---------- (1)
After 7th person is added then (x+7th person age)/7=45
7th person age = 45 *7 - x
=> 7th age = 69

Tags: TCS

NA
SHSTTON
7
Solv. Corr.
18
Solv. In. Corr.
25
Attempted
1 M:6 S
Avg. Time

90 / 649

In the reading room of a library, there are 23 reading spots. Each reading spot consists of a round table with 9 chairs placed around it. There are some readers such that in each occupied reading spot there are different numbers of readers. If in all there are 36 readers, how many reading spots do not have even a single reader?

A8

B15

C16

D17

Explanation: