IBPS RRB PO Prelims 21 Aug 2022 Shift 2 Paper

© examsiri.com
Question : 60 of 80
 
Marks: +1, -0
In the following number series, only one number is wrong. Find out the wrong number.
3, 7, 15, 39, 63, 127, 255, 511
Go to Question: