Multiple Choice Questions on The two given numbers A and B are in the ratio 5 6 such that their LCM is 480 Find their HCF ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

The two given numbers A and B are in the ratio 5 6 such that their LCM is 480 Find their HCF ........

Quantitative Aptitude ( CCS) LCM, HCF
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    The two given numbers A and B are in the ratio 5:6 such that their LCM is 480. Find their HCF.

    15

    Incorrect Answer

    18

    Incorrect Answer

    22

    Incorrect Answer

    16

    Correct Answer
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    Explanation:

    Tip: If A and B are two numbers,
    A x B = HCF of A and B x LCM of A and B
    Let K be common factor. So 2 numbers are 5K and 6K
    Also K is the greatest common factor (HCF) as 5 and 6 have no other common factor
    ∴ 5K x 6K = 480 x K
    K = 16 = HCF

    By: MIRZA SADDAM HUSSAIN
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