Originally Posted by

**eei** Not sure if this is exactly what I am looking for....can you confirm..

The conditions are as follows:

1. 4 numbers added together that have a total of say 20 (must be 4 numbers only, 1,2, or 3 will not do).

2. The 4 numbers used must all be different and must be contained between say 1 and 30 inclusive. No repition of numbers in the sum e.g. 1,1,3,15 (NOT ALLOWED).

3. Like you say order does not matter.

Actually where does the formula come from, so I can read up...Thanks for all the help. Very much appreciated.