Week14 - Formula for Collection with repetitons

Why cannot the formula of Collection with repetitions be equal to Sequence with repetitions divided by k! ?

ie., N (power) k / k!

Hi @BanuPrakashReddy,
Because without repetition, there’s no constraint on the number of items that can be extended when one is already being picked.
But on the other side, in the case with repetition, we have a constraint on how many placeholders we have in spare after one element gets picked.
In both the cases (Sequences with repetition and Combinationwith repetition) this particular constraint is different. which is the reason we cannot associate both of them like this.