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16 November, 16:02

Explain how you know that 87 is a composite number.

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  1. 16 November, 18:46
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    87 is a Composite number because it can be divided by 3 and it is not a prime number. In other words A composite number is a number that is more than one and not a prime number.

    87/3=29, Not a prime number

    87-1 = 86, Above 1
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