if x and y are nonzero

This topic has expert replies
Source: — Data Sufficiency |

Master | Next Rank: 500 Posts
Posts: 179
Joined: Mon Dec 29, 2008 4:41 am
Thanked: 2 times

by abhinav85 » Mon Jun 22, 2009 12:09 pm
IMO C.

Ques is asking that is x^y < y^x?

Lets take the Stamt 2 first,

its says y>2 ,so let y = 3.

x^3<3^x.this could be anything becoz we don't know that
what is postive and what is negative.not suff.

From stamt 1 we get x= y^2,

replace this in the ques we get y^2y < y^y^2.not suff.



taking both of them together we get,

y^2y < y^y^2. let y=3

3^6 < 3^9.

Hence C.