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# Factorials and Combinations

## Choosing one or more objects from a set when order doesn't matter.

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.

## Factorials and Combinations

by CK-12 //at grade
A review of factorials and combinations.
MEMORY METER
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• Video

## Permutations and Combinations 3

by CK-12 //at grade
Goes through several examples of permutations and combinations.
MEMORY METER
This indicates how strong in your memory this concept is
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