Home » Aptitude » Number System » Question
  1. It is given that ( 232 + 1 ) is exactly divisible by a certain number. Which of the following is also definitely divisible by the same number ?
    1. ( 216 + 1 )
    2. ( 216 - 1 )
    3. 7 x 213
    4. ( 296 + 1 )
Correct Option: D

Let 232 = x and let ( 232 + 1 ) = ( x + 1 )
( 296 + 1 ) = ( x3 + 1 ) = ( x + 1 )( x2 -x + 1 )
Which is clearly divisible by n as ( x + 1 ) is divisible by n.


Your comments will be displayed only after manual approval.