Answer: 34650
Explanation:
The number of permutations of n objects, where one object is repeated
times , another is repeated
times and so on is :

Given : The number of letters in string MISSISSIPPI = 11
Here I is repeated 4 times, S is repeated 4 times and P is repeated 2 times.
Then , the number of different strings can be made from the letters in MISSISSIPPI, using all letters is given by :-

Therefore , there are 34650 different strings can be made from the letters in MISSISSIPPI.