GCAT Numerical Series Patterns 3

Question 1

Find the next number: 5, 10, 20, 40, 80, ?

Accepted Answer

160

Answer

Each term is multiplied by 2, so 80 × 2 = 160.

Question 2

What comes next in: 50, 47, 44, 41, 38, ?

Accepted Answer

35

Answer

The series decreases by 3 each time, so 38 − 3 = 35.

Question 3

Identify the next term: 2, 6, 18, 54, 162, ?

Accepted Answer

486

Answer

Each term is multiplied by 3, so 162 × 3 = 486.

Question 4

What is the missing number: 1, 1, 2, 3, 5, 8, 13, ?

Accepted Answer

21

Answer

This is the Fibonacci sequence where each term is the sum of the two preceding terms: 8 + 13 = 21.

Question 5

Complete the series: 64, 32, 16, 8, 4, ?

Accepted Answer

2

Answer

Each term is halved (divided by 2), so 4 ÷ 2 = 2.

GCAT - General Cognitive Ability Test Practice Test