Saturday, May 2, 2009

Problem 8 - GMAT Number Properties


Posted by at

1 comment:

  1. Vikram SikandMarch 14, 2010 at 11:10 PM

    I will approach this problem a little differently:
    2^8p=1(mod5)
    2^2=4(mod5)
    2^8p+2=4(mod5)
    or 2^(8p+2) + z=(4+z)(mod5)
    or x=4+z
    A is sufficient.

    ReplyDelete

Subscribe to: Post Comments (Atom)