Numerical Reasoning Number Series and Sequences 3

Question 1

What is the next term: 2, 3, 5, 9, 17, __?

Accepted Answer

33

Answer

Each term = previous term × 2 − 1: 2→3(×2−1), 3→5, 5→9, 9→17, 17→33.

Question 2

Find the missing number: 4, 12, 36, 108, __, 972?

Accepted Answer

324

Answer

Each term is multiplied by 3; 108 × 3 = 324.

Question 3

What comes next: 1, 3, 6, 10, 15, __?

Accepted Answer

21

Answer

These are triangular numbers; differences are +2, +3, +4, +5, +6; 15+6 = 21.

Question 4

Identify the next number: 256, 128, 64, 32, __?

Accepted Answer

16

Answer

Each term is halved; 32 ÷ 2 = 16.

Question 5

What is the missing term: 11, 22, 44, 88, __, 352?

Accepted Answer

176

Answer

Each term is doubled; 88 × 2 = 176.

Numerical Reasoning Practice Test