Basic Ability Test Basic Ability Number Series and Sequences 2

Question 1

What comes next in the series: 3, 6, 12, 24, 48, ___?

Accepted Answer

96

Answer

Each term is multiplied by 2, so 48 × 2 = 96.

Question 2

Find the missing number: 100, 91, 82, 73, ___, 55

Accepted Answer

64

Answer

Each term decreases by 9, so 73 − 9 = 64.

Question 3

Which number continues the pattern: 1, 4, 9, 16, 25, ___?

Accepted Answer

36

Answer

These are perfect squares (1², 2², 3², …), so the next is 6² = 36.

Question 4

Complete the sequence: 2, 3, 5, 8, 13, ___?

Accepted Answer

21

Answer

Each term is the sum of the two preceding terms (Fibonacci pattern), so 8 + 13 = 21.

Question 5

What is the missing term? 5, 10, 20, ___, 80, 160

Accepted Answer

40

Answer

Each term doubles, so 20 × 2 = 40.

Basic Ability Test Practice Test