Question

Find the number of permutations in the word “swimming”.

Answer 1

`\bf _nP_r=\cfrac{n!}{(n-r)!} \\\\\\ swimming\impliedby \textit{has 8 characters, how many groups of 8?} \\\\\\ _8P_8=\cfrac{8!}{(8-8)!}\implies _8P_8=\cfrac{8!}{1}`