A box contains 5 red and 4 white marbles. Two marbles are drawn successively from the ithout replacement, and it is noted that the second one is white. What is the probability that st one is also white?

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...
icon
Related questions
Question

Please provide a well explained and correct solution for the following 

A box contains 5 red and 4 white marbles. Two marbles are drawn successively from the
box without replacement, and it is noted that the second one is white. What is the probability that
the first one is also white?
Transcribed Image Text:A box contains 5 red and 4 white marbles. Two marbles are drawn successively from the box without replacement, and it is noted that the second one is white. What is the probability that the first one is also white?
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer