The operation @ is defined for all integers x and y as x @ y=xy-y. If x and y are positive integers, which of the following cannot be Zero?

The operation @ is defined for all integers x and y as x @ y=xy-y. If x and y are positive integers, which of the following cannot be Zero?

A x@y

B y@x

C (x-y)@y

D (x+1)@y

E None

Solution

Correct Answer: Option D