Crossover Aptitude Test Numerical Reasoning: Number Sequences 3 — Questions and Answers
Question 1: What is the next number: 1, 1, 2, 6, 24, ?
- 48
- 100
- 120 (Correct answer)
- 144
Correct answer: 120
Each term is multiplied by its position index: 24 × 5 = 120 (factorials: 0!, 1!, 2!, 3!, 4!, 5!).
Question 2: Find the missing number: 3, 9, 27, ?, 243
- 54
- 72
- 81 (Correct answer)
- 90
Correct answer: 81
Each term is multiplied by 3 (powers of 3), so 27 × 3 = 81.
Question 3: What comes next: 2, 5, 11, 23, 47, ?
- 94
- 95 (Correct answer)
- 96
- 97
Correct answer: 95
Each term is doubled and then 1 is added: (47 × 2) + 1 = 95.
Question 4: Which number is missing: 10, 20, 30, ?, 50, 60
- 35
- 38
- 40 (Correct answer)
- 45
Correct answer: 40
These are multiples of 10 in order, so the missing value is 40.
Question 5: Find the next term: 256, 128, 64, 32, ?
- 8
- 16 (Correct answer)
- 20
- 24
Correct answer: 16
Each term is halved, so 32 ÷ 2 = 16.
Question 6: What is the missing number: 2, 6, 18, ?, 162
- 36
- 48
- 54 (Correct answer)
- 72
Correct answer: 54
Each term is multiplied by 3, so 18 × 3 = 54.
Question 7: Complete the sequence: 4, 7, 12, 19, 28, ?
- 37
- 38
- 39 (Correct answer)
- 40
Correct answer: 39
The differences are 3, 5, 7, 9, 11 (odd numbers), so 28 + 11 = 39.
Crossover Aptitude Test Numerical Reasoning: Number Sequences 3
What is the next number: 1, 1, 2, 6, 24, ?