A) An even number
B) An odd number
C) A prime number
D) Divisible by 3
Correct Answer: A
Solution :Let n be a natural number, then \[(n+1)\]will be a consecutive natural number. \[\Rightarrow \] Their product \[=n(n+1)\] So, the product would always be an even number. If n is odd, then \[n+1\] would be even, their product is even. If n is even, then \[n+1\] would be odd, again their product is even.
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