If x, y and z are consecutive non-zero integers with the middle digit being even and the condition that x < y <z. Which of the following must be a positive odd integer?

If x, y and z are consecutive non-zero integers with the middle digit being even and the condition that x < y <z. Which of the following must be a positive odd integer?

A x-y-z

B xyz

C x+y-z

D xz-y

Solution

Correct Answer: Option D