Civil Service Numerical Reasoning Test Number Sequences and Patterns 4

Question 1

What is the next number: 256, 64, 16, 4, __?

Accepted Answer

1

Answer

Each term is divided by 4: 256/4=64, 64/4=16, 16/4=4, 4/4=1.

Question 2

Find the missing number: 2, 9, 28, __, 126?

Accepted Answer

65

Answer

Pattern: 1³+1=2, 2³+1=9, 3³+1=28, 4³+1=65, 5³+1=126. Missing = 4³+1 = 65.

Question 3

What is the next term: 17, 13, 9, 5, __?

Accepted Answer

1

Answer

The sequence decreases by 4 each time: 5 − 4 = 1.

Question 4

Find the missing number: 1, 2, 4, 7, 11, 16, __?

Accepted Answer

22

Answer

Differences: +1, +2, +3, +4, +5, +6. Next = 16 + 6 = 22.

Question 5

What comes next: 5, 15, 45, 135, __?

Accepted Answer

405

Answer

Each term is multiplied by 3: 135 × 3 = 405.

Civil Service Numerical Reasoning Practice Test