# TCS Aptitude Questions with Answers

8 previously-asked aptitude questions from TCS's hiring process, each with the correct answer and a worked explanation. Written against the company's actual test pattern.

_Source: Astra (https://useastra.in). Updated 2026-09-05._

### 1. Find the next term in the series: 2, 3, 5, 7, 11, ?

A. 12
B. 13
C. 14
D. 15

**Answer:** 13

**Explanation:** The series lists consecutive prime numbers, so the next prime after 11 is 13.

### 2. If the price of sugar increases by 25%, by what percent must a family reduce its consumption so that expenditure stays the same?

A. 20%
B. 25%
C. 15%
D. 30%

**Answer:** 20%

**Explanation:** Reduction percent = increase / (100 + increase) * 100 = 25/125 * 100 = 20%.

### 3. A can finish a work in 10 days and B in 15 days. Working together, how many days will they take?

A. 6 days
B. 5 days
C. 7 days
D. 8 days

**Answer:** 6 days

**Explanation:** Combined one-day work = 1/10 + 1/15 = 1/6, so together they take 6 days.

### 4. A train 120 metres long runs at 60 km/h. How long does it take to cross a pole?

A. 7.2 seconds
B. 6 seconds
C. 8 seconds
D. 10 seconds

**Answer:** 7.2 seconds

**Explanation:** Speed = 60 * 5/18 = 16.67 m/s. Time = 120 / 16.67 = 7.2 seconds.

### 5. The cost price of an item is Rs 500. What is the selling price for a 20% profit?

A. Rs 600
B. Rs 520
C. Rs 620
D. Rs 580

**Answer:** Rs 600

**Explanation:** Selling price = 500 + 20% of 500 = 500 + 100 = Rs 600.

### 6. A sum of Rs 600 is divided between two people in the ratio 2:3. What is the larger share?

A. Rs 360
B. Rs 240
C. Rs 300
D. Rs 400

**Answer:** Rs 360

**Explanation:** Total parts = 5. Larger share = 3/5 * 600 = Rs 360.

### 7. A father is three times as old as his son. In 12 years he will be twice as old as his son. What is the son current age?

A. 12 years
B. 10 years
C. 15 years
D. 8 years

**Answer:** 12 years

**Explanation:** Let son = x, father = 3x. Then 3x + 12 = 2(x + 12), giving x = 12.

### 8. Choose the synonym of the word ABUNDANT.

A. Plentiful
B. Scarce
C. Empty
D. Rare

**Answer:** Plentiful

**Explanation:** Abundant means existing in large quantity, which matches plentiful.

More TCS preparation, including the full recruitment process: https://useastra.in/campus/tcs