# Number Series – Logical Reasoning Questions and Answers

**Number series – Logical Reasoning Questions and Answers is about the missing number series that you can expect for Competitive Examination.**

**Number Series – Logical Reasoning Questions and AnswersMissing Number Series Questions and Answers for Competitive Examination**

**Find the missing number: 5, 8, 7, 10, 9, 12, —-**

Answer: 11

Explanation: Consider two series 5, 7, 9, ——– and 8, 10, 12, ————

2 is added in each series.**What number should come next? 1, 8, 27, 64, ———**

Answer: 125

Explanation: It is the cube of 1, 2, 3, 4, 5 ——————-**What number should come next? 3, 1, 5, 3, 7, ——–**

Answer: 5

Explanation: First 2 is subtracted then 4 is added.**What number should come next? 32, 30, 32, 28, 32, ——–**

Answer: 26

Explanation: 32 remain same then 2 is subtracted.**What number should come next? 2, 5, 10, 17, 26, ——–**

Answer: 37

Explanation: Add 3, 5, 7, 9 and 11 respectively.**What number should come next? 4, 8, 24, 96, ——**

Answer: 480

Explanation: 4 x 2 = 8, 8 x 3 = 24, 24 x 4 = 96, 96 x 5 = 480**What number should come next? 2, 10, 17, 23, 28, —–**

Answer: 32

Explanation: Add 8, 7, 6, 5, 4 respectively**What number should come next? 4, 6, 8, 12, 12, 18, 16, ——**

Answer: 24

Explanation: Consider 2 series 4, 8, 12, 16, ——- and 6, 12, 18, ——-

Increased by 4 and 6 respectively.**What number should come next? 1, 9, 25, 49, ——**

Answer: 81

Explanation: It is the square of the numbers 1, 3, 5, 7, 9 ———–**What number should come next? 50, 40, 32, 26, ——-**

Answer: 22

Explanation: Decreased by 10, 8, 6, 4 ———**What number should come next? 2, 3, 5, 7, 11, ———-**

Answer: 13

Explanation: It is a series of prime numbers.**What number should come next? 1, 4, 16, 64, 256, ——-**

Answer: 1024

Explanation: It is a series formed by the multiplication with 4.

1 x 4 = 4, 4 x 4 = 16, 16 x 4 = 64, 64 x 4 = 256, 256 x 4 = 1024**What number should come next? 5, 10, 20, 40, 80, ——-**

Answer: 160

Explanation: It is a series formed by the multiplication with 2.

5 x 2 = 10, 10 x 2 = 20, 20 x 2 = 40, 40 x 2 = 80, 80 x 2 = 160**What number should come next? 40, 39, 37, 34, ——**

Answer: 30

Explanation: Subtracted by 1, 2, 3, 4, 5 ————–**What number should come next? 1, 2, 6, 15, 31, ——-**

Answer: 56

Explanation: Increased by the square of numbers 1, 2, 3, 4, 5 ————–

i.e. Add 1, 4, 9, 16, 25 —————————