Practice variation 1 of 3
Combinatorics — Two repeated letters
Your question
How many distinct linear arrangements of the letters in MISSISSIPPI are there?
This practice question was inspired by Question 11(b) in the 2023 NSW HSC Mathematics Extension 1 examination, © NESA. It is an original TestMum variation that practises the same mathematical idea, not an official NESA question.
Before you check
- Have you stated every choice or assumption?
- Can another student follow each line?
- Did you verify the final result independently?