# TCS Placement Questions & Answers :: TCS

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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%

**Answer:**** Option B **

**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%

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82 / 649

**Choose the correct option.**

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

**Answer:**** Option C **

**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

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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

**Answer:**** Option C **

**Explanation:**

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

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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)

**Answer:**** Option A **

**Explanation:**

Here is no explanation for this answer

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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

**Answer:**** Option C **

**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.

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86 / 649

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

A40

B37

C39

D33

**Answer:**** Option A **

**Explanation:**

70-54 = 16 = 4^2

54-45 = 9 = 3^2

45-41 = 4 = 2^2

41-40 = 1 = 1^2.

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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

**Answer:**** Option B **

**Explanation:**

Here is no explanation for this answer

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88 / 649

**Choose the correct option.**

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

**Answer:**** Option A **

**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

So answer is 26 hours.

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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

**Answer:**** Option B **

**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

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90 / 649

**Choose the correct option.**

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

**Answer:**** Option B **

**Explanation:**

1+2+3+4+5+6+7+8= 36 readers

so, 8 spots have different readers.

remainings are 23-8= 15. (at least)

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Here is the list of questions asked in Solved Placement Papers of TCS TCS aptitude questions. Practice TCS Written Test Papers with Solutions and take Q4Interview TCS Online Test Questions to crack TCS written round test. Overall the level of the TCS Online Assessment Test is moderate. Only those candidates who clear the written exam will qualify for the next round, so practic all the questions here and take all the free tests before going for final selection process of TCS