Assume that you have 4 dimes and 5 quarters (all distinct), and you select 3 coins. (3) In how many ways can the selection be made if you select 2 dimes and 1 quarter? (4) In how many ways can the selection be made so that at least 1 coin is a dime?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Assume that you have 4 dimes and 5 quarters (all distinct), and you select 3 coins.

(3) In how many ways can the selection be made if you select 2 dimes and 1 quarter?
(4) In how many ways can the selection be made so that at least 1 coin is a dime?

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