Question

    The greatest common divisor of 98 and 490

    is:
    A 111 Correct Answer Incorrect Answer
    B 98 Correct Answer Incorrect Answer
    C 89 Correct Answer Incorrect Answer
    D 78 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Prime factors of 98 = 2 × 7 × 7

    Prime factors of 490 = 2 × 5 × 7 × 7

    HCF = 2 × 7 × 7 = 98

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