Does x-y = 200 ?
(1) x=10^2
(2) x=100 and y=-100
Seems very easy, don't understand why choice 1 is incorrect ?
(1) x=10^2
(2) x=100 and y=-100
Seems very easy, don't understand why choice 1 is incorrect ?
well,
1 says nothing about Y . thats why 1 is incorrect
for y=-100, x-y will be 200
for y=any other value it x-y will not be 200. Thats why NOT SUFF
2) is SUFF
