26 Statistics and the Casio fx-9750G Plus • Activity 5 Copyright © Casio, Inc.
The last calculation changes the P and K values again. Now P becomes 31 and K
becomes 3.
The students should be familiar with the following vocabulary:
Combinations
Probability
Getting Started
In this activity the students will need their Casio fx-9750G Plus graphing
calculator. You may want the students to calculate these answers themselves and
then check with their calculator.
p
C
k
= =
P!
K! (P – K)!
31
C
3
= =
31!
3! (31 – 3)!
8.22 10
33
1.83 10
30
= 4495 combinations
Activity 5: Ice Cream Favorites Teaching Notes (continued)
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