Explain why 654321+432*1-321 is composite

Question

Aimee Benjamin

Mathematics

9 September, 18:12

Explain why 654321+432*1-321 is composite

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Answers (1)

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Sylvia Kent · Answer 1

6*5*4*3*2*1+4*3*2*1-3*2*1 =

6*5*4*3*2*1 + (4-1) * 3*2*1=

6*5*4*3*2*1+3*3*2*1=

3*2*1 * (6*5*4+3)

this number has more than 2 factors, therefore is composite

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