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If a is an even positive integer and b i...

If a is an even positive integer and b is an odd positive integer, then which of the following statement is true?

A

a (b - 1) is even

B

a (b - 1) is odd

C

(a - 1) (0 - 1) is even

D

(a - 1) is even

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The correct Answer is:
A
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