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Additive and Multiplicative Rules for Probability

Apply tree diagrams to calculations.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

The Counting Principle

by CK-12 //basic
Find ways to count all different events
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• Video

Determining Probability

by CK-12 //basic
Learn how to determine the probability of different types of events using combinations and other methods.
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