The Basic or Fundamental Counting Principle can be used determine the possible outcomes
when there are two or more characteristics can vary.

Example: Ice cream comes in either a cup or a cone and the flavors available are chocolate, strawberry
and vanilla.

/ chocolate cup
/ chocolate <
/ \ chocolate cone
/
/ / strawberry cup
<-- strawberry <
\ \ strawberry cone
\
\ / vanilla cup
\ vanilla <
\ vanilla cone

The diagram above is called a tree diagram and shows all of the possibilities. The
tree diagram could also be arranged in another way. Both diagrams have 6 total outcomes.

/ chocolate cup
/
/ cup <-- strawberry cup
/ \
/ \ vanilla cup
/
<
\
\ / chocolate cone
\ /
\ cone <-- strawberry cone
\
\ vanilla cone

To determine the total number of outcomes, multiply the number of possibilities of
the first characteristic times the number of possibilities of the second characteristic.
In the example above, multiply 3 times 2 to get 6 possible outcomes.

If there are more than two outcomes, continue to multiply the possibilities together to determine
the total outcomes.