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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