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Explain why 3×5×7+7 is a composite …

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Explain why 3×5×7+7 is a composite number.

    • Posted by Tanya ?? Mishra 6 years, 7 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Deepak Singh 6 years, 7 months ago

    ✓ 3×5×7+7 = 7(3×5×1+1) = 7(15+1) = 7(16) = 112 It has more than two factors i.e.1,2,4. Therefore it is a composite number.

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