Question

Q58. What will come in place of (?) in the following number series?

9 17 33 65 ?

• A. (a) 99
• B. (b) 117
• C. (c) 119
• D. (d) 129

Answer 1

The correct option is D

(d) 129

(9*2)-1 = 17;

(17*2)-1= 33;

(33*2)-1 = 65;

(65*2)-1= 129;