Basic Ability Test Basic Ability Number Series and Sequences 5

Question 1

Identify the next term: 5, 10, 17, 26, 37, ___?

Accepted Answer

50

Answer

Differences are 5,7,9,11,13 (odd numbers increasing by 2), so 37 + 13 = 50.

Question 2

What is the missing value? 6, 12, 24, 48, ___, 192

Accepted Answer

96

Answer

Each term doubles, so 48 × 2 = 96.

Question 3

Complete the series: 1000, 500, 250, 125, ___?

Accepted Answer

62.5

Answer

Each term is halved, so 125 ÷ 2 = 62.5.

Question 4

Find the next number in: 3, 8, 15, 24, 35, ___?

Accepted Answer

48

Answer

Differences are 5,7,9,11,13 — each increases by 2 — so 35 + 13 = 48.

Question 5

What comes next? 1, 3, 7, 15, 31, ___?

Accepted Answer

63

Answer

Each term is doubled and then 1 is added: (31 × 2) + 1 = 63.

Basic Ability Test Practice Test