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Lecture

Fundamental Counting Rules

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Department
Biology
Course
Biology 2244A/B
Professor
Ben Rubin
Semester
Fall

Description
COUNTING Fundamental Counting RuleFor a sequence of two events in which the first event can occur m ways and the second event can occur n ways the event together can occur m x n waysy Works for situations with more that 2 events Rember that this is the number of ways something can occur and not a NoteprobabilityThe number of ways something can occur is related to its probability in classical probability but it is not the same thingNotation The factorial symboldenotes the product of decreasing positive whole numbers Eg 44 x 3 x 2 x 124 By special definition 01 Factorial RuleA collection of n different items can be arranged in order n different waysy This factorial rule reflects the fact that the first item may be
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