In a certain school the number of students of the second secondary year is 100. 60 girls and 40 boys. The director of the school selects randomly and simultaneously three students from all the classes of the second secondary year. 1. Calculate the probability that the director selects three students of the same gender (three boys or three girls). 236 2. Prove that the probability that the director selects two girls is 539* 3. Calculate the probability that the director selects at least one boy.

In a certain school the number of students of the second secondary year is 100. 60 girls and 40 boys. The director of the school selects randomly and simultaneously three students from all the classes of the second secondary year. 1. Calculate the probability that the director selects three students of the same gender (three boys or three girls). 236 2. Prove that the probability that the director selects two girls is 539* 3. Calculate the probability that the director selects at least one boy.

Name: Exercise 3Part A:In a certain school the number of students of the se
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Description: Exercise 3Part A:In a certain school the number of students of the second secondary year is 100.60 girls and 40 boys.The director of the school selects randomly and simultaneously three students from allthe classes of the second secondary year.1. Ca

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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