WorksheetWorks.com - Counting Principle

Counting Principle

Solve word problems with the counting principle

When there is more than one dimension to an event or occurence, it is useful to know how many different outcomes are possible. The counting principle is a tool to quickly find out the total number combinations that exist.

Working with the counting principle is easy. To find out how many combinations exist, simply multiply the possible combinations of each dimension together to get the result. For exmaple, if a toy comes in two sizes and three colors, then mutiply two by three to get six possible combinations.

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