I'm trying to write a formula to work out all the possible combinations of say 2 numbers from a group of 30 numbers ranging from (1 - 50). This formula would need to also work with combinations of 3 or 4 or even 5 numbers as well. The group of numbers may increase from 30 or decrease. I know how to calculate the actual number of combinations I just can't figure how to write the code to list all the combinations. Any help would be greatly appreciated.

An example of the group of 30 numbers... 1,4,6,9,10,11,14,15,18,19,20,21,22,24,27,29,30,31,33,34,35,38,39,41,42,43,45,47,48,50