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Railways RRB (Assistant Loco Pilot & Technician) Solved Paper-2 (2014)

  • question_answer
    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)  \[(a-1)\,(b-1)\] is even    

    D)  \[(a-1)\,b\] is even

    Correct Answer: A

    Solution :

    As, a is even and \[(b-1)\] will be even, so \[a(b-1)=\]even integer.


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