# Placement Questions & Answers :: TCS

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**TCS Practice Q&A**

221. A man can hit a target once in 3 shots.If he fires 3 shots in succession, find the probability that he will hit his target.

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

**Explanation:**

Probability of hitting the target = (1 - probability of not hitting the target)

if man hits once every 3 balls,

probability of hitting = 1/3 => probability of not hitting=2/3

So, probability of not hitting the target all three times = (2/3)* (2/3)* (2/3) = 8/27

=> Probability of hitting target = (1 - 8/27) = 19/27

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222.

In the given below figure, If the sum of the values along each side is equal.

Find the possible values a, b, c, d, e, and f.

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

**Explanation:**

42 + a + b = 47 + e

=> a + b = 5 + e ----- (1)

by eq. (1) option a, b ruled out.

47 + e = 15 + f

=> 32 + e = f ------- (2)

Option d will be ruled out

So Option will fit in eq. (1) & (2)

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223. 4 men throw a die each simultaneously. Find the probability that at least 2 people get the same number

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

**Explanation:**

1-(probability of not getting same no.)=1-((6*5*4*3)/(6*6*6*6))

=(1-5/18) = 13/18

**ShortCut By ::**

**srruthi**

1-(probability of not getting same no.)=1-((6*5*4*3)/(6*6*6*6))

=(1-5/18) = 13/18

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224. 17 X 8 m rectangular ground is surrounded by 1.5 m width path. Depth of the path is 12 cm. Gravel is filled and find the quantity of gravel required.

**Answer:**** Option D **

**Explanation:**

Area of the rectangular ground = 17*8=136 m^2

Area of the big rectangle considering the path width = (17+2*1.5)*(8+2*1.5) = 220 m^2

Area of the path = 220−136 = 84 m^2

Gravel required = 84 m^2 * 12/100 m = 10.08 m^3

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225. There are 120 male and 100 female in a society. Out of 25% male and 20% female are rural. 20% of male and 25% of female rural people passed in the exam. What % of rural students have passed the exam?

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

**Explanation:**

Given 120 male and 100 female society.

Rural male = 25*120/100= 30, Rural female = 20*100/100 = 20.

Passed students from rural:

male = 20*30/100 = 6, female = 25*20/100 = 5

Required percentage = 11/50*100=22%

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226. 1/7 th of the tank contains fuel. If 22 litres of fuel is poured into the tank the indicator rests at 1/5th mark. What is the quantity of the tank?

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

**Explanation:**

Lets assume the quantity of tank = x

x/7 + 22 = x/5

=> x/5-x/7 = 22

=> 2x/35 = 22 => x = 385

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227. What is the remainder of (32^31^301) when it is divided by 9?

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

**Explanation:**

32^31^301

when 31 divided by 9 gives remainder 5

5 5^2 5^3 all gives the same unit digit 5

so 31^32 gives unit digit 5

same rule applicable to 31^301

when 31 divided by 9 gives remainder 4

4 4^2 4^3 4^4 =4 6 4 6 unit place repeats for every 2 times i,e for even power its uint place is 6 and for odd its 4

as 301 is odd its unit place is 4

so 31^32^301=31^4=5^4=5

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228. How many positive integers less than 500 can be formed using the numbers 1,2,3,and 5 for digits, each digit being used only once.

**Answer:**** Option D **

**Explanation:**

Single digit number = 4

Double digit number = 4*3 = 12

Three digit numbers = 3*3*2= 18

Total = 34.

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229. In how many possible ways can write 3240 as a product of 3 positive integers a,b and c.

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

**Explanation:**

3240 = 23*34*51 = a*b*c

We have to distribute three 2's to a, b, c in 3+3−1C3−1 = 5C2 = 10 ways

We have to distribute four 3's to a, b, c in 3+4−1C3−1 = 6C2 = 15 ways

We have to distribute one 5 to a, b, c in 3 ways.

Total ways = 10*15*3 = 450 ways

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230.

What is the next number?

11, 23, 47, 83, 131, ....

**Answer:**** Option D **

**Explanation:**

23–11 = 12

47–23 = 24

83–47 = 36

131–83 = 48

Therefore, 131+60=191

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Here is the list of questions asked in Practice TCS aptitude papers TCS aptitude test Paper. 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