Multiple Choice Questions on If the sum of two numbers is 55 and the H C F and L C M of these numbers are 5 and 120 respectively ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

If the sum of two numbers is 55 and the H C F and L C M of these numbers are 5 and 120 respectively ...........

Quantitative Aptitude ( CCS) LCM, HCF
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    If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to:

    55/601

    Incorrect Answer

    601/55

    Incorrect Answer

    11/120

    Correct Answer

    120/11

    Incorrect Answer
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    Explanation:

    Let the numbers be a and b.

    Then, a + b = 55 and ab = 5 x 120 = 600.

    The required sum = 1/a + 1/b

    = a + b /ab = 55/600 = 11/120

    Hence, option 3 is the correct answer.

    By: Amit Kumar
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