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184-B4-1
The Product Rule
1. Find the number of possible outcomes.
Example
There are 2 roads from the house to the department store, and there are 3 roads
from the department store to the zoo. How many ways can you go from the house
to the department store and then to the zoo?
Home Department Zoo
store
a. There are 4 roads from the house to the stationary store, and 4 roads from the
stationary store to the school. How many ways can you go from the house to
the stationary store and then to the school?
b. There are 5 ways from A to B and 3 ways from B to C. How many ways are
there to go from A to B and then to C?
ABC
The Product Rule
1. Find the number of possible outcomes.
Example
There are 2 roads from the house to the department store, and there are 3 roads
from the department store to the zoo. How many ways can you go from the house
to the department store and then to the zoo?
Home Department Zoo
store
a. There are 4 roads from the house to the stationary store, and 4 roads from the
stationary store to the school. How many ways can you go from the house to
the stationary store and then to the school?
b. There are 5 ways from A to B and 3 ways from B to C. How many ways are
there to go from A to B and then to C?
ABC
