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Combinatorics - Blank filler

Joely is answering a fill-in-the-blank section on an exam. There are 6 answer choices: a, b, c, d, e, and f, and 5 blanks to fill in. Each answer choice can only be used once, and one answer will not be chosen. How many different ways can Joely fill in the 5 blanks?
  1. Determine whether permutations or combinations are being counted.
  2. Determine if repetition is allowed.
  3. Find the number of permutations without repetition.
  4. Confirm your answer using your graphing calculator.
This applet is provided by Walch Education as supplemental material for the UCSS Secondary Math II program. Visit www.walch.com for more information on our resources.