By choosing your own combinations a single file can have multiple results based on your selections. Since your file to encrypt becomes part of the key the chances are very high, that each file will have it's individual and unique encryption mechanism.

Not every algorithm you chose may be used for encryption. The program decices dynmically which algorithm to use at which point. With variation of the files encrypted and and the algorithms to be used make it very likely that every encryption you do is unique.

The optimal number of algorithms to select is 8 which gives you a possible 12870 combinations just from the algorithm selection. This to the faculty of 100 gives you a rough 1,2011e+162 possible combinations for a medium 4MB file. But that depends on the structure of your file to encrypt.