A class has 13 students, of which 4 are seniors. How many committees of size 4 can be selected if at least one member of each committee must be a senior? The number of committees is
A class has 13 students, of which 4 are seniors. How many committees of size 4 can be selected if at least one member of each committee must be a senior? The number of committees is
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 42SE: In horse racing, a “trifecta” occurs when a bettor wins by selecting the first three finishers in...
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Question
A class has
13
students, of which
4
are seniors. How many committees of size
4
can be selected if at least one member of each committee must be a senior?The number of committees is
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