SOLUTION: a bag contains 3 red &7blue balls two balls are drawn at random without replacement if second selection is given to be red find probability that first is also red

Question 565331: a bag contains 3 red &7blue balls two balls are drawn at random without replacement if second selection is given to be red find probability that first is also red

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a bag contains 3 red &7blue balls two balls are drawn at random without replacement if second selection is given to be red find probability that first is also red
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If 2nd is red, when there is no replacement after 1st,
probability that 1st is red is 2/10 = 1/5
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Cheers,
Stan H.
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