Question

How do you find the number of permutations in the word arithmetic?

Answer 1

If the 2 i's and the 2 t's are considered different letters, then the number of permutations is `10! =3628000` since there are then 10 different letters.

If however the repeated letters are considered as the same items, then the total different permutations is `(10!)/(2!*2!)=907200`.