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    Question

    Three numbers are in the ratio 4 : 9 : 13 and their LCM

    is 2340. Their HCF is:
    A 7 Correct Answer Incorrect Answer
    B 3 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 5 Correct Answer Incorrect Answer

    Solution

    Let, the HCF of the numbers = H So, the three numbers are 4H, 9H, and 13H. According to the question, тЗТ LCM (4H, 9H, 13H) = 2340 тЗТ (4 ├Ч 9 ├Ч 13) ├Ч H = 2340 тЗТ 468 ├Ч H = 2340 тЗТ H = 2340/468 тЗТ H = 5 тИ┤ Their HCF is 5.

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