# Microsoft Aptitude Questions with Answers

6 previously-asked aptitude questions from Microsoft'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. What is 30% of 90?

A. 27
B. 30
C. 25
D. 33

**Answer:** 27

**Explanation:** 30% of 90 = 0.30 * 90 = 27.

### 2. Find the next term in the series: 1, 3, 6, 10, 15, ?

A. 21
B. 20
C. 18
D. 22

**Answer:** 21

**Explanation:** These are triangular numbers; the next difference is 6, so 15 + 6 = 21.

### 3. What is the decimal value of the binary number 1011?

A. 11
B. 13
C. 9
D. 7

**Answer:** 11

**Explanation:** 1011 in binary is 8 + 0 + 2 + 1 = 11.

### 4. What is the value of 7 factorial divided by 5 factorial?

A. 42
B. 7
C. 35
D. 49

**Answer:** 42

**Explanation:** 7! / 5! = 7 * 6 = 42.

### 5. Choose the antonym of the word EFFICIENT.

A. Wasteful
B. Productive
C. Quick
D. Capable

**Answer:** Wasteful

**Explanation:** Efficient means achieving results with little waste; its opposite is wasteful.

### 6. What is the value of 3 raised to the power 4?

A. 81
B. 64
C. 27
D. 12

**Answer:** 81

**Explanation:** 3 to the 4 equals 81.

More Microsoft preparation, including the full recruitment process: https://useastra.in/campus/microsoft