IBEW Number Sequences and Patterns 5 — Questions and Answers
Question 1: What is the next term: 0.5, 1, 2, 4, 8, ___?
- 12
- 14
- 16 (Correct answer)
- 20
Correct answer: 16
Each term doubles, so 8 × 2 = 16.
Question 2: Find the missing number: 1, 1, 2, 3, 5, 8, ___, 21?
- 11
- 12
- 13 (Correct answer)
- 14
Correct answer: 13
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, ___?
- 5
- 6
- 7.5 (Correct answer)
- 8
Correct answer: 7.5
Each term is halved, so 15 ÷ 2 = 7.5.
Question 4: Which number comes next: 4, 9, 16, 25, 36, ___?
- 42
- 45
- 49 (Correct answer)
- 52
Correct answer: 49
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, ___?
- 86
- 88
- 90 (Correct answer)
- 94
Correct answer: 90
The pattern alternates ×2 and −2, so 92 − 2 = 90.
Question 6: What is the next number: 1000, 500, 250, 125, ___?
- 50
- 60
- 62.5 (Correct answer)
- 65
Correct answer: 62.5
Each term is halved, so 125 ÷ 2 = 62.5.
Question 7: Find the next term: 2, 4, 3, 9, 4, 16, 5, ___?
- 20
- 22
- 25 (Correct answer)
- 30
Correct answer: 25
The sequence alternates counting numbers and their squares: 5's square is 25.
IBEW Number Sequences and Patterns 5
What is the next term: 0.5, 1, 2, 4, 8, ___?