In how many ways can the selection be made?  In how many ways can the selection be made if all the coins are dimes? In how many ways can the selection be made if you select 2 dimes and 1 quarter? 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
Section: Chapter Questions
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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Rework problem 9 from section 2.3 of your text. Assume that you have 8 dimes and 3 quarters (all distinct), and you select 3 coins.

In how many ways can the selection be made? 

In how many ways can the selection be made if all the coins are dimes?

In how many ways can the selection be made if you select 2 dimes and 1 quarter?

In how many ways can the selection be made so that at least 1 coin is a dime? 

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