Mathmatics Question?

Posted on 2014-12-12 06:00:00 in Math by OZZER

Problem 1. Assume that we have a box containing 7 blue balls and 9 red balls. Which of the following events has the smallest probability?

a) Assume that we pick 2 balls. What is the probability that both balls are blue?

b) Assume that we pick (and remove) 2 balls. Then we pick one extra ball later. What is the probability that the third ball is blue knowing that the previous two balls were both red?

c) Assume that we pick 5 balls. What is the probability that 3 of them are red and 2 of them are blue?

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