| Directions: What will come in place of question mark (?) in the following number series? [CBI (PO) 2010] |
| 15, 21, 39, 77, 143,? |
A) 243
B) 240
C) 253
D) 245
E) None of these
Correct Answer: D
Solution :
 |
You need to login to perform this action.
You will be redirected in
3 sec
