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Texas Instruments
9-12
30 Minutes
Students are first introduced to the counting principle and the factorial symbol. Then, they will calculate combinations and permutations using these formulas and the nCr, n!, and nPr commands on the graphing calculator.
Students will use nPr command on the graphing calculator to check their work on a permutation problem.
Students will use the nCr command on the graphing calculator to check their work on a combination problem.