PI - Cognitive Assessment Number Series Problems 2

Question 1

What comes next: 3, 6, 12, 24, 48, ___?

Accepted Answer

96

Answer

Each number is doubled: 3×2=6, 6×2=12, 12×2=24, 24×2=48, 48×2=96.

Question 2

What comes next: 1, 1, 2, 3, 5, 8, ___?

Accepted Answer

13

Answer

This is the Fibonacci sequence: each number is the sum of the two preceding numbers. 5+8=13.

Question 3

What comes next: 100, 81, 64, 49, 36, ___?

Accepted Answer

25

Answer

These are perfect squares in descending order: 10², 9², 8², 7², 6², 5²=25.

Question 4

What comes next: 2, 6, 18, 54, ___?

Accepted Answer

162

Answer

Each number is multiplied by 3: 2×3=6, 6×3=18, 18×3=54, 54×3=162.

Question 5

What comes next: 5, 10, 8, 16, 14, 28, ___?

Accepted Answer

26

Answer

The pattern alternates: ×2, then −2. 5×2=10, 10−2=8, 8×2=16, 16−2=14, 14×2=28, 28−2=26.

PI - Cognitive Assessment Practice Test