Hello,

I have a question

I have been trying to investigate the formula that gives the number of possible arrangements of elements in cells. But I just can't get this formula. I've been thinking a lot and I think it involves factorials but this is just confusing me since two different arrangements could be equivalent given other formulas

For example, if I have three cells ( ), I can arrange two elements ( ) inthreedifferent combinations.

Can anyone help me out on this formula (it's obviously very simple as I cannot find it ...) ? Thanks all

PS: I have to apply the formula to and next. Seems like I'm going to have to count decimal digits lol.