CCAT Number Series Patterns 4

Question 1

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

Accepted Answer

96

Answer

Each term doubles the previous one, so 48 × 2 = 96.

Question 2

What comes next? 100, 91, 83, 76, 70, ___

Accepted Answer

65

Answer

The differences decrease by 1 each step: −9, −8, −7, −6, −5, so next is 70 − 5 = 65.

Question 3

What comes next? 2, 3, 5, 8, 13, 21, ___

Accepted Answer

34

Answer

This is the Fibonacci sequence where each term is the sum of the two before it: 13 + 21 = 34.

Question 4

What comes next? 5, 10, 20, 35, 55, ___

Accepted Answer

80

Answer

Differences are +5, +10, +15, +20, +25, so 55 + 25 = 80.

Question 5

What comes next? 729, 243, 81, 27, ___

Accepted Answer

9

Answer

Each term is divided by 3, so 27 ÷ 3 = 9.

CCAT Practice Test