Posted by kristen on Tuesday, July 30, 2013 at 7:24pm.
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?

Math  probability!  Reiny, Tuesday, July 30, 2013 at 9:10pm
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
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