Click here to load reader
Upload
valentine-sutton
View
216
Download
0
Embed Size (px)
DESCRIPTION
n C r shows the number of combinations of n objects chosen r at a time. Ex:
Citation preview
I can find combinations using combination notation.
Combinations
Selection of objects WITHOUT regard to order.Order does not matter
Ex: selecting two side dishes from a list of fiveThe order in which you select your dishes
doesn’t matter.
What is a Combination?
nCr shows the number of combinations of n objects chosen r at a time.
Ex:
Combination N0tation
Twenty people report for jury duty. How many different 12-person juries can be chosen?
Practice
Enter the number of objectsPress MATHLeft arrow3 (nCr)Enter the number to be selectedENTER
Using a Calculator
P.766 #27-39 All, 46
Assignment