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QUESTION
What are the factors of 90?
##90=2xx3^2xx5##.
##90=9xx10=3xx3xx10=3xx3xx2xx5##.
These above are the prime factors of ##90##.
To get all the factors of ##90##:
##1xx90## ##2xx45## ##3xx30## ##5xx18## ##6xx15## ##9xx10##
