Page 170 - Math Course 1 (Book 2)

Fundamental Counting Principle

You can draw a diagram to f nd the number of
possible cards. Your Turn!

blue H, b Use a Tree Diagram to Count Outcomes
green H, g ICE CREAM
Humorous An ice cream parlor offers a special on one-scoop
orange H, o
sundaes with one topping. The ice cream parlor has
red H, r 5 different f avors of ice cream and three different
choices for toppings. How many different sundaes
blue T, b can be made?

green T, g
Traditional A. 3
orange T, o B. 5
C. 8
red T, r
D. 15

blue R, b Answer
green R, g
Romantic
orange R, o
red R, r

Answer There are 12 possible cards.

Using the Fundamental Counting Principle

Example Using the Fundamental Counting Principle

SANDWICHES
CELL PHONES A sandwich shop offers 4 choices for bread, 5

A cell phone company offers 3 payment choices for meat, and 3 choices for cheese. If a
plans, 4 styles of phones, and 6 decorative customer can make one choice from each category,
phone wraps. How many phone options are how many different sandwiches can be made?
available?

Use the Fundamental Counting Principle. A. 60
B. 12
The number the C. 5
of types of number of the number the number
payment styles of of decorative of possible D. 3
plans times phones times wraps equals outcomes.

3 × 4 × 6 = 72
Answer
There are 72 possible phone
Answer
options.

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