Question 51

What is the LCM (least common multiple) of 57 and 93?

Solution

Prime factorization of 57 = 3 $$\times$$ 19

Prime factorization of 93 = 3 $$\times$$ 31

=> L.C.M. of 57 and 93 = 3 $$\times$$ 19 $$\times$$ 31

= 57 $$\times$$ 31 = 1767

=> Ans - (A)

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