How many different 10letter words real or imaginary can be f

How many different 10-letter words (real or imaginary) can be formed from the following letters?

Solution

There are

1 S
2 J
1 A
1 F
1 N
1 L
1 W
1 O
1 C

Thus, by permutation of like objects, there are

10!/(1!2!1!1!1!1!1!1!1!) = 1814400 words [ANSWER]