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In how many ways can the letters of the word 'MISSISIPPI' be arranged ?

Correct Answer: 12600

Explanation:

Total number of alphabets = 10


so ways to arrange them = 10! 


 


Then there will be duplicates because 1st S is no different than 2nd S.


we have 4 Is 3 S and 2 Ps 


 


Hence number of arrangements = 10!/4! x 3! x 2! = 12600


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