6th Class Mathematics Factors and Multiples Question Bank Factors & Multiples

  • question_answer A number n is divisible by only two primes. Also twice of the number is a perfect square while thrice of the number is a perfect cube. The number of factors of least possible value of n is

    A)  6                                

    B)  8            

    C)  10                  

    D)  12

    Correct Answer: D

    Solution :

    \[\frac{144}{2}=72\] \[72\times 3=216\] No. is 72 \[{{2}^{3}}\times {{3}^{2}}\] \[\therefore \]No. of factor \[\Rightarrow \text{ }4\times 3=12\] No. of factor\[=12\]

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