Example 2.3.30 A bag contains 5 balls and it is not known how many ofthese are white. Two balls are drawn and are found to be white. What is theprobability that all are white.

Answered: Image /qna-images/answer/6291bad3-29de-4b94-a8db-0bb432ded977.jpg

Answered: these are white. Two balls are drawn…

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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Similar questions

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You take all the balls one by one without replacement in a box. You have 7 red balls and 15 blue balls. What is the probability that the last two balls chosen are blue?
In a box, there are 9 black ball pens and 3 red ball pens. If two ball pens will be taken randomly, what is the probability that the ball pens are both red? one red, and one black? both black?
a bag contains 4 red marbles, 6 white marbles, and 5 blue marbles. You draw 4 marbles out at random, without replacement. What is the probability that exactly one of the marbles is blue?
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A gunball machine contains 5 red gumballs, 3 blue gumballs, and 4 yellow gumballs. You put a coin in the machine, and two gumballs come out one after the other. What is the probability that the first gumball that comes out is blue and the second gumboil is red?
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A bag contains 4 black balls and 5 white balls. Two balls are randomly drawn from the bag without replacement. What is the probability that both balls are black?
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these are white. Two balls are drawn and are found to be white. What is the how many of probability that all are white.