PI - Cognitive Assessment Cognitive Assessment Number Series Problems 1

Question 1

What comes next: 7, 14, 21, 28, 35, ___?

Accepted Answer

42

Answer

Each term increases by 7 (multiples of 7). 35 + 7 = 42.

Question 2

What comes next: 1, 8, 27, 64, 125, ___?

Accepted Answer

216

Answer

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, ___?

Accepted Answer

13

Answer

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, ___?

Accepted Answer

21

Answer

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, ___?

Accepted Answer

33

Answer

The differences between consecutive terms are 2, 4, 6, 8, 10 — increasing by 2 each time. 23 + 10 = 33.

PI - Cognitive Assessment Practice Test