IBEW Number Sequences and Patterns 5

Question 1

What is the next term: 0.5, 1, 2, 4, 8, ___?

Accepted Answer

16

Answer

Each term doubles, so 8 × 2 = 16.

Question 2

Find the missing number: 1, 1, 2, 3, 5, 8, ___, 21?

Accepted Answer

13

Answer

This is the Fibonacci sequence where each term equals the sum of the prior two: 5 + 8 = 13.

Question 3

What is the next value: 120, 60, 30, 15, ___?

Accepted Answer

7.5

Answer

Each term is halved, so 15 ÷ 2 = 7.5.

Question 4

Which number comes next: 4, 9, 16, 25, 36, ___?

Accepted Answer

49

Answer

These are perfect squares (2², 3², 4², 5², 6²), so the next is 7² = 49.

Question 5

Complete the sequence: 13, 26, 24, 48, 46, 92, ___?

Accepted Answer

90

Answer

The pattern alternates ×2 and −2, so 92 − 2 = 90.

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