PI - Cognitive Assessment Cognitive Assessment Number Series Problems 1 — Questions and Answers
Question 1: What comes next: 7, 14, 21, 28, 35, ___?
- 40
- 42 (Correct answer)
- 45
- 49
Correct answer: 42
Each term increases by 7 (multiples of 7). 35 + 7 = 42.
Question 2: What comes next: 1, 8, 27, 64, 125, ___?
- 196
- 216 (Correct answer)
- 243
- 256
Correct answer: 216
Each term is a perfect cube: 1³=1, 2³=8, 3³=27, 4³=64, 5³=125, 6³=216.
Question 3: What comes next: 2, 3, 5, 7, 11, ___?
- 12
- 13 (Correct answer)
- 14
- 15
Correct answer: 13
This sequence lists prime numbers in ascending order. After 11, the next prime is 13.
Question 4: What comes next: 1, 3, 6, 10, 15, ___?
- 18
- 20
- 21 (Correct answer)
- 25
Correct answer: 21
The differences between terms increase by 1 each time: +2, +3, +4, +5, +6. So 15 + 6 = 21. These are triangular numbers.
Question 5: What comes next: 3, 5, 9, 15, 23, ___?
- 30
- 33 (Correct answer)
- 35
- 37
Correct answer: 33
The differences between consecutive terms are 2, 4, 6, 8, 10 — increasing by 2 each time. 23 + 10 = 33.
Question 6: What comes next: 50, 45, 39, 32, 24, ___?
- 15 (Correct answer)
- 16
- 17
- 18
Correct answer: 15
The amounts subtracted increase by 1 each step: −5, −6, −7, −8, −9. So 24 − 9 = 15.
PI - Cognitive Assessment Cognitive Assessment Number Series Problems 1
What comes next: 7, 14, 21, 28, 35, ___?