VJesus12 wrote:|x-y|=?
1) x and y are integers
2) xy=5
Statement 1:
Clearly INSUFFICIENT.
Statement 2:
If x=5 and y=1, then |x-y| = |5-1| = 4.
If x=10 and y=0.5, then |x-y| = |10-0.5) = 9.5.
Since |x-y| can be different values, INSUFFICIENT.
Statements combined:
If x=5 and y=1, then |x-y| = |5-1| = 4.
If x=1 and y=5, then |x-y| = |1-5| = 4.
If x=-5 and y=-1, then |x-y| = |-5-(-1)| = 4.
If x=-1 and y=-5, then |x-y| = |-1-(-5)| = 4.
No other cases are possible.
In every case, |x-y| = 4.
SUFFICIENT.
The correct answer is
C.
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