A box contains 10 Red balls and 5 Blue balls. A person has been assigned to transfer 4 balls at random to a second box one ball at a time. a) What is the probability that all the balls in the 2nd box are all blue balls? b) Given that 2 Red balls have been picked up, what is the probability that the next 2 balls will also be Red? c) What is probability that the sequence of the transferred balls is {Blue, Red, Blue, and Red}?

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