Let `x` and `y` be positive integers such that `x` is prime and `y` is composite. Which of the following statements

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Q 1720312211.     Let `x` and `y` be positive integers such that `x` is
prime and `y` is composite. Which of the following
statements are correct?

`(y- x)` can be an even integer.
`xy` can be an even integer.
`0.5 (x + y)` can be an even integer

Select the correct answer using the code given below
CDS 2015 Paper-2
A

`1` and `2`

B

`2` and `3`

C

`1` and `3`

D

`1, 2` and `3`

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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