A jar contains 7 red marbles, numbered 1 to 7, and 11 blue marbles numbered 1 to 11. a) A marble is chosen at random. If you're told the marble is blue, what is the probability that it has the number 4 on it?   b) The first marble is replaced, and another marble is chosen at random. If you're told the marble has the number 10 on it, what is the probability the marble is blue?

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A:

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.