Statement 1: if x is 2, y=5, then 4<5, here 2<5, that is x<y if x is 0.5, y=0.3, then 0.25<0.3, here 0.5>0.3, that is x>y So we cant conclude that if x>y of x<y Statement 2: Here x>=0, if square both sides of the inequality, we have x>y^2, then x>y Thus, statement 2 only is sufficient. Please let me...