SOLUTION: A bag contains 7 red chips and 10 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that both chips are red?

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Question 475144: A bag contains 7 red chips and 10 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that both chips are red?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
P(Both red) = P(red AND red)


P(Both red) = P(red)*P(red)


P(Both red) = (7/17)*(6/16)


P(Both red) = 42/272


P(Both red) = 21/136