If x and y are two different prime numbers, which of the following cannot be true?	Choose one
A) xy is odd.  B) x + y is even.  C) x + y is odd  D) xy is even  E) x/y is an integer
A prime number is a positive integer with exactly two distinct positive divisors: 1 and itself. So, a prime number cannot be a multiple of another prime number. Which makes option E not possible (x/y=integer means that x is a multiple of y).   All other options are possible:   A. xy is odd --&gt; x=3 and y=5;   B. x + y is even --&gt; x=3 and y=5;   C. x + y is odd --&gt; x=2 and y=3;   D. xy is even --&gt; x=2 and y=3; Answer: x/y is an integer
<result>E</result>
If x and y are two different prime numbers, which of the following cannot be true?