Lars has 9 different math textbooks, 12 different chemistry books and 6 different biology books. He arranges these twenty-seven books randomly on a shelf. What is the probability that books of the same subject are all together? A. B. O C. O D. O E. 1 3! 9!12!6! 9!12!6! 27! 3!9!12!6! 27! 1 9!12!6!

Lars has 9 different math textbooks, 12 different chemistry books and 6 different biology books. He arranges these twenty-seven books randomly on a shelf. What is the probability that books of the same subject are all together? A. B. O C. O D. O E. 1 3! 9!12!6! 9!12!6! 27! 3!9!12!6! 27! 1 9!12!6!

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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Question

Lars has 9 different math textbooks, 12 different chemistry books and 6 different biology books. He arranges these twenty-seven books randomly on a shelf. What
is the probability that books of the same subject are all together?
A.
B.
O C.
O D.
O E.
1
3!
9!12!6!
9!12!6!
27!
3!9!12!6!
27!
1
9!12!6!

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