How to find common factors of any 2 numbers?
E.g.- Find the common factors of 87 and 54.
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Prime factorisation is the best method .
87 = 29*3 and 54= 3*3*3*2 so the common factor is 3
87 = 29*3 and 54= 3*3*3*2 so the common factor is 3
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