If X is an odd integer and Y is an even integer, which of the following statements is (are) always true? 1. X+Y is odd 2. XY is odd 3. 2X+Y is even
A. 1 only
B. 3 only
C. 1 and 3 only
D. 2 and 3 only
সঠিক উত্তরঃ
C.
1 and 3 only
Explanation:
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