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Pulsified333
 one year ago
student who wants to buy 3 CDs, but assume that there are 3 CDs featuring the piano, 6 CDs featuring the trumpet, and 5 CDs featuring the saxophone.
(2) In how many ways can the selection be made if CD's featuring at least 2 different instruments are selected?
Pulsified333
 one year ago
student who wants to buy 3 CDs, but assume that there are 3 CDs featuring the piano, 6 CDs featuring the trumpet, and 5 CDs featuring the saxophone. (2) In how many ways can the selection be made if CD's featuring at least 2 different instruments are selected?

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kropot72
 one year ago
Best ResponseYou've already chosen the best response.0Selections with 3 or 2 CDs of piano, trumpet or saxophone must be excluded. Therefore the required number of ways is given by: 14C3  (3C3 + 3C2 + 6C3 + 6C2 + 5C3 + 5C2) = you can calculate

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0@kropot72 that is not correct

kropot72
 one year ago
Best ResponseYou've already chosen the best response.0Do you have answer choices?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.0What are your reasons for disputing the method of solution that I posted?
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