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17 June, 07:29

Which of the following is a composite number 63,31, 13,61

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  1. 17 June, 09:07
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    A composite number is a number that is not prime, that is, it has factors.

    Here, it's 63: it's divisible by 3:

    63/3=21

    and then by 3 again:

    21/3=7

    and only 7 is a prime.

    so 63 is the answer
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