8th Class Mathematics Playing with Numbers Question Bank Playing with Numbers

  • question_answer
    If 'n' is an even integer, which of the following must be an odd integer?

    A)  \[3n-2\]              

    B)         \[n-2\]

    C)         \[3(n+1)\]         

    D)         \[\frac{n}{3}\]                 

    Correct Answer: C

    Solution :

    Consider \[n=10\] (Even) \[\Rightarrow \] \[3(n+1)=3(11)=33\to Odd\]


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