Combinatorics Problem
Probability
Level
2
In how many ways can you arrange the letters of the word Probability ?
The answer is 9979200.
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1 solution
There are 11 letters, 2 of which are b's, 2 are i's and the rest of the letters appear once.
2 ! 2 ! 1 1 ! = 9 7 9 2 0 0