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If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000.

Find the sum of all the multiples of 3 or 5 below 1000.

Spoiler

This post has been edited by **jimblumberg**: 10 July 2012 - 02:40 AM

Reason for edit:: Added missing Code Tags, Please learn to use them.