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    Question

    What is the Highest Common Factor of 48, 144 and 240?

    A 24 Correct Answer Incorrect Answer
    B 48 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 16 Correct Answer Incorrect Answer

    Solution

    Factors of 48 = 2 × 2 × 2 × 2 × 3 Factors of 144 = 2 × 2 × 2 × 2 × 3 × 3 Factors of 240 = 2 × 2 × 2 × 2 × 3 × 5 Highest Common Factor = 2 × 2 × 2 × 2 × 3 = 48

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