A group of 90 students is to be split at random into 3 classes of equal size. All partitions are equally likely. Joe and Jane are members of the 90-student group. Find the probability that Joe and Jane end up in the same class.
A group of 90 students is to be split at random into 3 classes of equal size. All partitions are equally likely. Joe and Jane are members of the 90-student group. Find the probability that Joe and Jane end up in the same class.
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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are equally likely. Joe and Jane are members of the 90-student group. Find the probability
that Joe and Jane end up in the same class.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F153bfb9c-b05e-4b91-94e3-9e151aaf7f28%2F56690d25-7afa-48e6-bb8f-bf2597d629a7%2F6dm2y8q_processed.png&w=3840&q=75)
Transcribed Image Text:A group of 90 students is to be split at random into 3 classes of equal size. All partitions
are equally likely. Joe and Jane are members of the 90-student group. Find the probability
that Joe and Jane end up in the same class.
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