Asked by kristen
a club has 15 members plus their president. a 5 person committee is to be formed.
A) how many committees include the president?
B) how many committees don't include the president?
C) how many committees altogether?
A) how many committees include the president?
B) how many committees don't include the president?
C) how many committees altogether?
Answers
Answered by
Reiny
a) so we need 4 more from the 15members
= C(15,4) = 1365
b) no president in selection
= C(15,5) = 3003
c) no restriction, choose 5 from the 16
= C(16,5) = 4368
notice: 1365 + 3003 = 4368
= C(15,4) = 1365
b) no president in selection
= C(15,5) = 3003
c) no restriction, choose 5 from the 16
= C(16,5) = 4368
notice: 1365 + 3003 = 4368
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