Seudónimo Seudónimo

01-01-2015
Mathematics

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For how many positive three-digit integers is the product of their three digits 90?

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apologiabiology apologiabiology

01-01-2015

so just find the factors of 90
90=2 times 3 times 3 times 5
so the factors could be
2,3,15
2,9,5
6,3,5
10,3,3
there are 4our

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