SOLUTION: A bag contains 7 black checkers and 3 red checkers. once a checker is picked it is not replaced. what is the probability of picking 2 red checkers?

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Question 310880: A bag contains 7 black checkers and 3 red checkers. once a checker is picked it is not replaced. what is the probability of picking 2 red checkers?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
First,
P(R)=3/10
Red checker not replaced.
Then,
P(R)=2/9
P(R,R)=(3/10)(2/9)=1/15