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A jar contains 5 red marbles, numbered 1 to 5, and 11 blue marbles numbered 1 to 11.
a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 2 on it?
b)The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 7 on it, what is the probability the marble is red?
1 answer
1 answer