Mueen Nawaz wrote:
> Hi,
> 
> 	Just found this a few days ago. It's apparently been around for years,
> so some of you may know about it:
> 
> http://projecteuler.net/index.php?section=about


I'm noticing that I can do some of these problems without a computer. 
Number 5 would take a while with pen and paper, but it is simple the LCM 
of the numbers from 2 to 20 (16 * 9 * 5 * 7 * 11 * 13 * 17 * 19).

There is a simple formula for the sum of the squares, and for the square 
of the sums (which happens to be equal to the sum of the cubes), so 
number six is straightforward as well.

The others are time-consuming to the point that a computer makes it easier.

Regards,
John

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