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a boy was asked to find the LCM of 3, 5, 12 and another number.But while calculating, he wrote 21 instead of 12 and ...

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7 answers under Brain Teasers 8 years, 9 months ago

A. the LCM of 3,5,12 is 60.the LCM of 3,21,5 is 105.The LCM of 60 and 105 is 420. So the fourth number is 420 link
8 years, 9 months ago
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