Don has 4 black pens, 3 blue pens, and 2 red pens in his school bag. Don randomly picks two pens out of his school bag. 1. What is the probability that Don chose two blue pens, if he replaced the first pen back in his school bag before choosing a second pen? 2. What is the probability that Don chose black pens and red, if he replaced the first pen back in his school bag before choosing a second pen?

Don has 4 black pens, 3 blue pens, and 2 red pens in his school bag. Don randomly picks two pens out of his school bag. 1. What is the probability that Don chose two blue pens, if he replaced the first pen back in his school bag before choosing a second pen? 2. What is the probability that Don chose black pens and red, if he replaced the first pen back in his school bag before choosing a second pen?

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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