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pychu [463]
3 years ago
9

Find the number of distinguishable permutations of the given letters "aaabbbccc".

English
1 answer:
torisob [31]3 years ago
7 0
The answer is:
9!/(1!*3!*3!) 
You take the total quantity of letters you have factorial, divided by each of you dissimilar types of letters factorial. The reason that there is a 1! in the start is since you have the first two A's in the front, so they won't be going anywhere, leaving you with 1 A, therefore, 1!. and there are 3 B and C so 3!
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