# How many different permutations can you make with the letters in the word seventeen?

Nov 15, 2015

2 cases to consider :

Case 1 : Repeated letters are different letters :

Number of permutations is 9!.

Case 2 : Repeated letters are not different letters :

n repeated twice, e repeated 4 times.

Number of permutations is (9!)/(2!*4!).