Question

Select the number that can replace the question mark (?) in the given number series.

5, 9, 16, 29, ?, 103

• A. 92
• B. 86
• C. 78
• D. 54

Answer 1

Answer:

D. 54

5 × 2 - 1 = 10 - 1 = 9 9 × 2 - 2 = 18 - 2 = 16 16 × 2 - 3 = 32 - 3 = 29 29 × 2 - 4 = 58 - 4 = 54 54 × 2 - 5 = 108 - 5 = 103