10th Class Mathematics Real Numbers Question Bank Real Numbers

  • question_answer The product of two consecutive natural numbers is always ____-

    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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