IBEW Number Sequences and Patterns 2 — Questions and Answers
Question 1: What is the next number in the sequence: 3, 6, 12, 24, 48, ___?
- 72
- 84
- 96 (Correct answer)
- 108
Correct answer: 96
Each term is multiplied by 2, so 48 × 2 = 96.
Question 2: Find the missing number: 100, 91, 82, 73, ___, 55
- 60
- 62
- 64 (Correct answer)
- 66
Correct answer: 64
Each term decreases by 9, so 73 − 9 = 64.
Question 3: What comes next: 1, 4, 9, 16, 25, ___?
- 30
- 34
- 36 (Correct answer)
- 40
Correct answer: 36
These are perfect squares (1², 2², 3²…), so the next is 6² = 36.
Question 4: Which number continues the pattern: 2, 5, 11, 23, 47, ___?
- 85
- 89
- 93
- 95 (Correct answer)
Correct answer: 95
Each term is doubled then incremented by 1, so 47 × 2 + 1 = 95.
Question 5: Find the next term: 81, 27, 9, 3, ___?
- 1 (Correct answer)
- 2
- 0.5
- 1.5
Correct answer: 1
Each term is divided by 3, so 3 ÷ 3 = 1.
Question 6: What is the missing value: 7, 14, 21, ___, 35, 42?
- 25
- 27
- 28 (Correct answer)
- 30
Correct answer: 28
This is a sequence of multiples of 7, so the missing term is 7 × 4 = 28.
Question 7: Complete the sequence: 5, 10, 20, 40, 80, ___?
- 120
- 140
- 160 (Correct answer)
- 200
Correct answer: 160
Each term doubles, so 80 × 2 = 160.
IBEW Number Sequences and Patterns 2
What is the next number in the sequence: 3, 6, 12, 24, 48, ___?