box contains 23 items, 7 of which are defective. If 5 are sold at random. Find the following probabilities : -Exactly 3 are not in good condition -None is defective and All are defective -At least 1 is defective.

box contains 23 items, 7 of which are defective. If 5 are sold at random. Find the following probabilities : -Exactly 3 are not in good condition -None is defective and All are defective -At least 1 is defective.

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

A box contains 23 items, 7 of which are defective. If 5 are sold at random.

Find the following probabilities :

-Exactly 3 are not in good condition
-None is defective and All are defective
-At least 1 is defective.

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