If X and Y are two different prime numbers, which of the following cannot be true? Answers:	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?