If x and y are consecutive positive integers, which of the following must be an even integer?

If x and y are consecutive positive integers, which of the following must be an even integer?

A x

B y

C xy/2

D x/y

Solution

Correct Answer: Option E

we know that, odd × even = even

As x and y are consecutive positive integers

let x=1 and y = 2

so, xy=1 ×2 =2