let X and y the positive in integer such that X is prime and y is composite then,.
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Choose one prime number & one composite number & verify the options.
We will get only option D as the correct answer.
Ex- (2+4)=6 which is an integer.
Ex- 2×4 =8 is an even integer hence Option B is wrong.
Ex- (4-2)=2 is an even integer hence Option A is wrong
Ex- (2+6)/2 = 4 which is an even integer hence Option C is wrong.
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