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Created March 18, 2017 23:41
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2192864.mkd

My answer to a deleted question Interpretation of exponentation and permutation on math.SE

WayneXMayersX asked this question.

Question

I have $3^3$, can I call it a permutation/permutation with repetition?

As written in here:

Which is easier to write down using an exponent of $r$

Answer

Based on the text in the linked page (1. Permutations with repetition), you may call $3^3$ the number of all possible permutations with repetition of the balls ⚽,⚾,🔮. A permutation with repetition is an element drawn from a set (called sample space) $$\Omega={(x,y,z)\mid x,y,z \in {\unicode{x26BD},\unicode{x26BE},\unicode{x1F52E}}}.$$

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