Answers

2015-03-15T15:42:44+05:30
In order to find the largest 3 digit number divisible by 6,15 and 21, we need to first find the LCM of the three numbers. So the LCM comes to 210. This means that the product formed by multiplying any number to 210 will have 6,15 and 21 as factors.  

Now to find the largest 3 digit divisible to these number, we need to find the largest 3 digit number divisible by 210. So, the largest three digit number having 210 as factor is 840. Thus the largest 3 digit number divisible by 6,15 and 21 is 840.

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