Civil Service Numerical Reasoning Test Number Sequences and Patterns 2

Question 1

What comes next: 2, 3, 5, 8, 13, __?

Accepted Answer

21

Answer

This is the Fibonacci sequence — each term is the sum of the two preceding terms: 8 + 13 = 21.

Question 2

What is the missing number: 5, 10, 20, __, 80?

Accepted Answer

40

Answer

Each term is multiplied by 2: 5, 10, 20, 40, 80.

Question 3

What is the next number: 1, 8, 27, 64, __?

Accepted Answer

125

Answer

These are cubes: 1³, 2³, 3³, 4³, 5³. Next = 5³ = 125.

Question 4

Find the missing term: 45, 40, 34, 27, __, 10?

Accepted Answer

19

Answer

Differences: −5, −6, −7, −8, −9. From 27: 27 − 8 = 19.

Question 5

What comes next in the sequence: 2, 6, 18, 54, __?

Accepted Answer

162

Answer

Each term is multiplied by 3: 2, 6, 18, 54, 162.

Civil Service Numerical Reasoning Practice Test