Question

Look at this series:
2, 11, 18, 12, 14, 18, ........ What number should come next?

• A. 10
• B. 16
• C. 18
• D. 15

Hint:

For alternating number series, look for the changes in both addition and subtraction.

Answer 1

The Correct Option is D

The series alternates between adding and subtracting: - 2 + 9 = 11
- 11 + 7 = 18
- 18 - 6 = 12
- 12 + 2 = 14
- 14 + 4 = 18
Therefore, the next number should be 15.