silly mistake. Did not consider fraction for
2. x=y if x=y=1/2 then 1/2 > 1/4 so answer is Yes
so 2 is insufficient too
lets consider together
x=y and x>y+5 this is impossible because we are saying is x>x+5 so we cant consider this.
now x=-y and x>y+5 i.e -2y > 5
for example x=4 y=-4 i.e 8>5
is x>y^2 4 >16 NO
now for any number this will be true.
ANSWER IS C.
whats OA? I hope I am not wrong. I am making tons of silly mistakes lately.
Nice explanation orsang8. Here is an alternative to part of your explanation.
Your explanation of x = y ruling out is good.
For x = -y and x>y = 5 ==> x > -x+5
==> 2x>5 ==> x> 2.5.
When ever X > 1, X^2 > X ==> Y^2 > X(since X = -Y)
This way with the both the clues, we can say whether X > Y^2. Hence Ans is C.