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1 votes
1 votes
An urn contains 3 red and 7 black balls. Players A
and B withdraw balls from the urn consecutively
until a red ball is selected. Find the probability that
A selects the red ball. (A draws the first ball, then
B, and so on. There is no replacement of the balls
drawn.)

2 Answers

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0 votes
S=10C1=10

A=3C1x7C0=3x1=3

P=3/10=0.3

Red got chose by A=0.3/2=0.175

P=0.175.

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