A boy was asked to find the the LCM of 3, 5 ,12, and another number but while calculating ,he wrote 21 insted of 12 and yet came with the correct answer.what could be the fourth number?
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A boy was asked to find the L.C.M. of 3, 5, 12, and another number. But while calculating, he wrote 21 instead of 12 and yet came with the correct answer. ... Since the L.C.M. obtained in both cases is the same, the prime factors with greatest powers must be the same in both the cases.
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