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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