IBEW Number Sequences and Patterns 4

Question 1

Which number is next: 1, 2, 6, 24, 120, ___?

Accepted Answer

720

Answer

These are factorials (1!, 2!, 3!, 4!, 5!), so the next is 6! = 720.

Question 2

Find the next value: 256, 64, 16, 4, ___?

Accepted Answer

1

Answer

Each term is divided by 4, so 4 ÷ 4 = 1.

Question 3

What is the missing number: 11, 22, 33, ___, 55, 66?

Accepted Answer

44

Answer

These are multiples of 11, so the missing term is 11 × 4 = 44.

Question 4

Complete the pattern: 2, 6, 18, 54, 162, ___?

Accepted Answer

486

Answer

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

Question 5

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

Accepted Answer

63

Answer

Each term is doubled then 1 is added, so 31 × 2 + 1 = 63.

IBEW - Aptitude Test Practice Test