Permutations:
n P k = n!/((n-k)!)
So 10 P 10 = 10!
10!/4! would be if you have 10 smilies and only 6 slots to fill.
That's if you can't use twice the same smilie.
Permutations:
n P k = n!/((n-k)!)
So 10 P 10 = 10!
10!/4! would be if you have 10 smilies and only 6 slots to fill.
That's if you can't use twice the same smilie.
And then there is Death
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