evaluate the hcf of 60 and 75. solution: write each number as a product of its prime factors. 2 2 x 3 x 5 = 60 3 x 5 2 = 75 the product of all common prime factors is the hcf. the common prime factors in this example are 3 & 5. the lowest power of 3 is 3 and 5 is ...
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