Question

justify this answer !​

Answer 1

7 × 5 × 3 × 2 + 3

= 3 ( 7 × 5 × 2 + 1)

= 3 ( 70 + 1 )

= 3 × 71

It is a composite number as it has more than two factors which are 3 and 71.

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Answer 2

First solve the equation:

7×5×3×3+3 = 213

Know what a composite number is:

A positive integer that has mor factors other than 1 and itself.

Is 213 a composite number?

Yes because its factors are 1, 213, 3, and 71.

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