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**Q.**
### 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
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8 years, 9 months ago
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7 answers under Brain Teasers 8 years, 9 months ago

8 years, 9 months ago

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