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10th Class Mathematics Real Numbers Question Bank MCQs - Real Number

  • question_answer
    If the HCF of 65 and 117 is 13, LCM of 65 and 117 is 45 x a, then the value of a is

    A) 9

    B) 11

    C) 13

    D) 17

    Correct Answer: C

    Solution :

    We know that,
    \[HCF\text{ }\times \text{ }LCM\]= Product of two numbers
    \[\Rightarrow 45\times a\times 13=65\times 117\]
    \[\Rightarrow a=\frac{65\times 117}{45\times 13}\Rightarrow a=13\]
     


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