An urn contains 5 red marbles and 2 yellow marbles. One marble is removed, its color noted, and not replaced. A second marble is removed and its color is noted. (a) What is the probability that both marbles are red? yellow? (b) What is the probability that exactly one marble is red?
An urn contains 5 red marbles and 2 yellow marbles. One marble is removed, its color noted, and not replaced. A second marble is removed and its color is noted. (a) What is the probability that both marbles are red? yellow? (b) What is the probability that exactly one marble is red?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
An urn contains
5
red
marbles and
2
yellow
marbles. One marble is removed, its color noted, and not replaced. A second marble is removed and its color is noted.(a) What is the probability that both marbles are
red?
yellow?
(b) What is the probability that exactly one marble is
red?
(a)
Pr(RR)=nothing
(Type an integer or a simplified fraction.)
Expert Solution
Step 1
Given Information -
Total number of red marbles = 5
Total number of yellow marbles = 2
Total number of marbles = 7
We have to find the following -
(a) What is the probability that both marbles are red?
(b) What is the probability that exactly one marble is red?
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