is the probability that all books within the same subject will be adjacent?

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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4. You have 6 history books, 5 English books, 4 mathematics books, and 3
chemistry books which you randomly place next to each other on a shelf. What
is the probability that all books within the same subject will be adjacent?
Transcribed Image Text:4. You have 6 history books, 5 English books, 4 mathematics books, and 3 chemistry books which you randomly place next to each other on a shelf. What is the probability that all books within the same subject will be adjacent?
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