Recent content by Crazorin

When I originally wrote up the problem, I didn't used sets. I approached it as I have 6 numbers: 1, 1, 2, 2, 2, 3. How many different 4 digit number can be created of these 6 numbers? Then someone said, what I need is the permutation of multi-set. In that case you handle each repetition as a set...

[mentor note: THis is not a homework assignment. It is for a work project.] I need a formula that is probably based on permutations of multi-set. Except in my case you will not use up all elements of the sets, only some of them. For example I have the following sets: {1,1,1}{2}{3}...

Thanks. It is almost what I need except in those example they use up all element of each set. I would only use part of it. So if the sets are {1, 1}{2, 2}{3} then I have a total of 5 elements. And the question is how many different 3 digit numbers I can create of these 5 elements. Because they...

I need a formula to calculate permutation. For example I have a 5 numbers and I creating a 3 digit number from it. The numbers are: 1, 1, 1, 2, 3; I could write up 13 variations, but I couldn't work out the formula. If the numbers are: 1, 1, 2, 2, 3 the number of variations are 18 (if I wrote...