An urn contains seven black balls and three white ones. Two players, A and B, take turns to draw a ball at random without replacement, until one wins by drawing a white ball. Player A draws first. What is the probability that player A wins on his second draw?

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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An urn contains seven black balls and three white
ones. Two players, A and B, take turns to draw a
ball at random without replacement, until one wins
by drawing a white ball. Player A draws first.
What is the probability that player A wins on his
second draw?
O A. 5
12
O B. 7
12
Oc 11
12
O D. 12
12
OE 1
12
Transcribed Image Text:An urn contains seven black balls and three white ones. Two players, A and B, take turns to draw a ball at random without replacement, until one wins by drawing a white ball. Player A draws first. What is the probability that player A wins on his second draw? O A. 5 12 O B. 7 12 Oc 11 12 O D. 12 12 OE 1 12
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