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    Question

    If the highest common factor of two numbers is 20, then

    which of the following may be the least common multiple of the numbers?
    A 100 Correct Answer Incorrect Answer
    B 90 Correct Answer Incorrect Answer
    C 77 Correct Answer Incorrect Answer
    D 81 Correct Answer Incorrect Answer

    Solution

    LCM must be divisible by HCF. Only 100 is divisible by 20. So, 'possible least common multiple of the numbers is 100'.

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