EXAMPLE 43 Calculating the number of permutations and combinations using technology

Use the TI-83/84 and Excel to calculate the following:

Solution

We use the instructions provided in the Step-by-Step Technology Guide at the end of this section (page 302).

  1. From Figures 19a and 19b, we find that

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    Figure 5.21: FIGURE 19a TI-83/84 permutation results.
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    Figure 5.22: FIGURE 19b Excel permutation results.
  2. From Figures 19c and 19d, we find that .
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    Figure 5.23: FIGURE 19c TI-83/84 combination results.
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    Figure 5.24: FIGURE 19d Excel combination results.