An urn contains seven red marbles and six green marbles. Four marbles are selected (all at once). (a) What is the probability that you get all reds? (b) What is the probability that you get one red and three greens? (c) What is the probability that you get at least one of each color?

An urn contains seven red marbles and six green marbles. Four marbles are selected (all at once). (a) What is the probability that you get all reds? (b) What is the probability that you get one red and three greens? (c) What is the probability that you get at least one of each color?

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

An urn contains seven red marbles and six green marbles. Four marbles are selected (all at once).
(a) What is the probability that you get all reds?
(b) What is the probability that you get one red and three greens?
(c) What is the probability that you get at least one of each color?

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Expert Solution

Step 1: Given

Number of red marbles=7

Number of green marbles =6

Total number of marbles=7+6=13

Step by step

Solved in 3 steps with 3 images

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