MathRevolution wrote:

If x and y are integers such that x^2+2x+2y+4=2x^2+3x+y-2, we can deduce that y is

A. not an even

B. an even

C. not an odd

D. an odd

E. a prime

* A solution will be posted in two days.

Don't B and C mean the same thing. Given x and y are integers and if Y is not an odd integer then it must be an even integer! If an integer is not odd then it must be even , must it not ?

Unlike positive and negative where an integer need not be positive if it not negative ( e.g. zero ), even and odd have no intermediate category unless I am missing something .

according to wikipedia " An integer that is not an odd number is an even number."

https://simple.wikipedia.org/wiki/Odd_number.

If I am correct then the answer choices in this question are ambiguous . Kindly share your views too.

_________________

- Stne