Total number of letters = 11
There are some repititions. Letter E is repeated 3 times
The total number of arrangements would normally be n!. If there is a repitition of a particular letter r times, the total number of arrangements becomes
n!/r!
From the information given,
n = 11
r = 3
Thus,
number of arrangements = 11!/3!
number of arrangements = 6652800
