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    Find the LCM and HCF of 6 and 20.
    Question

    Find the LCM and HCF of 6 and 20.

    A.

    60, 3

    B.

    120, 2

    C.

    80, 2

    D.

    60, 2

    Correct option is D

    Given:

    Two numbers: 6 and 20

    Concept Used:

    HCF (Highest Common Factor): Product of common prime factors with lowest powers

    LCM (Least Common Multiple): Product of all prime factors with highest powers

    Solution:

    6 = 2×3

    20 = 22×52^2 \times 5​​

    HCF = 2

    LCM = 22×3×52^2 \times 3 \times 5​ = 60

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