x, y, and z are integers. Are they consecutive?
(1) y equals to the arithmetic mean of x and z
(2) x=-z
OA E
(1) y equals to the arithmetic mean of x and z
(2) x=-z
OA E
Any statement taken by itself is obviously insufficient. Let's see if you get anything by combining their powers... If x = -z, that means that the arithmetic mean of x and z is zero, giving you y = 0. That is not sufficient however, since you don't know anything about the nature of x and z. They could be -3 and 3, 12345 and -12345 and so forth.
So E would be correct.
