Counting Principle
Define probability
How likely is it that a coin is flipped and lands on tails?
as likely as not
Define "trial"
How likely is it that a number cube is tossed and lands on 3?
Unlikely
How likely is it that a number cube is tossed and it lands on 8?
Impossible
Define "event"
a set of one or more outcomes
How likely is it that a number cube is tossed and lands on any number 1-6?
Certain
Define "simple event."
Event choosing only one outcome
How likely is it that a number cube lands on 2 and a coin lands on heads?
unlikely