The Mississippi Counting Problems

The Mississippi Counting Problems

Problem 1

How many total arrangements of the letters in MISSISSIPPI are there?

Problem 2

How many arrangements of the letters in MISSISSIPPI exist such that the 2 P’s are separated?

Problem 3

How many arrangements of the letters in MISSISSIPPI have at least 2 adjacent S’s?

Note:

If you need a review of the basics, check out this intro to combinatorics post:

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