Probability

If event M has m possible outcomes and event N has n possible outcomes, then event M followed by event N has m × n possible outcomes.
Find the total number of outcomes when a coin is tossed and a number cube is rolled. There are 12 different outcomes. The school lunch menu has the following choices. How many different lunches can be made with one choice from each column?
The counting principle states that if one activity can occur in m ways and another activity con occur in n ways, then both activities can occur in mn ways. A tree can show the lunch choices. 