Allison desk drawer contains 4 blue pens and 5 black pens. Allison selects a blue pen from the drawer and does not put it back. Without looking, Allison selects a second pen from the drawer. What is the probability that the second pen she selects is blue? Answer correctly.

Allison desk drawer contains 4 blue pens and 5 black pens. Allison selects a blue pen from the drawer and does not put it back. Without looking, Allison selects a second pen from the drawer. What is the probability that the second pen she selects is blue? Answer correctly.

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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