CFAT Problem Solving: Number Series 3

Question 1

What is the next number: 2, 3, 5, 8, 13, 21, ?

Accepted Answer

34

Answer

Each term is the sum of the two preceding terms: 13 + 21 = 34.

Question 2

Which number comes next: 50, 25, 50, 25, 50, ?

Accepted Answer

25

Answer

The sequence alternates between 50 and 25, so the next term is 25.

Question 3

Find the next term: 1, 3, 7, 15, 31, ?

Accepted Answer

63

Answer

Each term equals (previous × 2) + 1, so 31 × 2 + 1 = 63.

Question 4

What is the next number: 10, 12, 15, 19, 24, ?

Accepted Answer

30

Answer

Differences increase by 1 each step (2, 3, 4, 5, 6), so 24 + 6 = 30.

Question 5

Complete the series: 64, 32, 16, 8, 4, ?

Accepted Answer

2

Answer

Each term is halved, so 4 ÷ 2 = 2.

(CFAT) Canadian Forces Aptitude Test Practice Test