Numerical Reasoning Number Series and Sequences 2 — Questions and Answers
Question 1: Find the missing value: 3, 9, 27, __, 243?
- 81 (Correct answer)
- 54
- 72
- 108
Correct answer: 81
Each term is multiplied by 3; 27 × 3 = 81.
Question 2: What comes next in the sequence: 2, 5, 10, 17, 26, __?
- 37 (Correct answer)
- 34
- 38
- 32
Correct answer: 37
Differences are +3, +5, +7, +9, +11; next term = 26 + 11 = 37.
Question 3: Identify the next number: 64, 32, 16, 8, 4, __?
- 2 (Correct answer)
- 1
- 3
- 0.5
Correct answer: 2
Each term is divided by 2 (ratio = 0.5); 4 ÷ 2 = 2.
Question 4: What is the missing term: 7, 14, 28, __, 112?
- 56 (Correct answer)
- 42
- 70
- 48
Correct answer: 56
Each term is multiplied by 2; 28 × 2 = 56.
Question 5: Find the next term: 1, 8, 27, 64, 125, __?
- 216 (Correct answer)
- 196
- 256
- 180
Correct answer: 216
These are perfect cubes: 1³=1, 2³=8, 3³=27, 4³=64, 5³=125, 6³=216.
Question 6: What number is missing: 50, 45, 39, 32, 24, __?
- 15 (Correct answer)
- 16
- 17
- 14
Correct answer: 15
Differences: −5, −6, −7, −8, −9; next term = 24 − 9 = 15.
Numerical Reasoning Number Series and Sequences 2
Find the missing value: 3, 9, 27, __, 243?