Permutations and factorials

Students will be introduced to permutations, and see factorial as a special case. Special attention should be given to explaining zero factorial. Conclude by giving your students the following challenge:


Make the following equations true by inserting addition, subtraction, multiplication, division, factorials, and parentheses, into the left-hand side of each equation:

  • 3 3 3 = 0
  • 3 3 3 = 1
  • ...
  • 3 3 3 = 9

Here's a solution.


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