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    Question

    The HCF of two numbers is 21. Which of the following can

    never be their LCM?
    A 126 Correct Answer Incorrect Answer
    B 191 Correct Answer Incorrect Answer
    C 63 Correct Answer Incorrect Answer
    D 231 Correct Answer Incorrect Answer

    Solution

    HCF of two numbers is 21. This means 21 is a common factor to both numbers. LCM is common multiple for the two numbers.

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