GCAT Numerical Series Patterns 2

Question 1

What is the next number in the series: 3, 6, 12, 24, 48, ?

Accepted Answer

96

Answer

Each term is doubled, so 48 × 2 = 96.

Question 2

Find the missing number: 100, 90, 81, 73, 66, ?

Accepted Answer

60

Answer

The differences are 10, 9, 8, 7, 6 — decreasing by 1 each time, so 66 − 6 = 60.

Question 3

What comes next: 1, 4, 9, 16, 25, ?

Accepted Answer

36

Answer

These are perfect squares (1², 2², 3², 4², 5²), so the next is 6² = 36.

Question 4

Complete the series: 2, 5, 11, 23, 47, ?

Accepted Answer

95

Answer

Each term is multiplied by 2 and then 1 is added: 47 × 2 + 1 = 95.

Question 5

Find the next number: 729, 243, 81, 27, ?

Accepted Answer

9

Answer

Each term is divided by 3, so 27 ÷ 3 = 9.

GCAT - General Cognitive Ability Test Practice Test