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Source: — Problem Solving |

by shankar.ashwin » Thu Nov 17, 2011 12:35 am
First thing there are 51 integers between 100 and 150 inclusive

There are 17 numbers divisible by 3 and 11 divisible by 5.

But there are few commons, (105,120,135 and 150) - 4

So subtract these 4 numbers, (17+11) - 4 = 24 numbers divisible by 5 or 3.

So not divisible by 5 or 3 = 51-24 = 27 B IMO
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