More Lessons for Algebra II

Math Worksheets

Videos, worksheets, games and activities to help Algebra II students learn about combinations.

A combination is a grouping or subset of items. For a combination, the order does not matters.

C(n,r) represents the number of combinations of n items r at a time. \(C\left( {n,r} \right) = {}_n{C_r} = \left( {\begin{array}{*{20}{c}}n\\r\end{array}} \right) = \frac{{P(n,r)}}{{r!}} = \frac{{n!}}{{\left( {n - r} \right)!r!}}\)

In this lesson, you will learn

How to evaluate a combination?

How to use combinations to solve problems?

This video introduces combinations and explains how to evaluate combinations as well as solve counting problems using combinations.

Probability of getting exactly 3 heads in 8 flips of a fair coin.

Students learn that a combination is an arrangement of objects in which the order is not important. F

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