Question

    LCM of 21 5 , 21 10 and 21 15 is?

    (1). 21 5

    (2). 21 15

    (3).2130

    (4 ). 21 10

    A 3 Correct Answer Incorrect Answer
    B 1 Correct Answer Incorrect Answer
    C 2 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer

    Solution

    LCM of 21 5 , 21 10  and 21 15  = 21 15  ( we always take highest power in case of LCM when base is same).

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