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In my Tae Kwon Do class, there are three black belts, three red belts, two...

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In my Tae Kwon Do class, there are three black belts, three red belts, two blue belts, four green belts, and three yellow belts. If the sensei selects a student at random to lead the warm-up, find the probability as a reduced fraction that the person is(a) Either a black belt or a blue belt.The probability that the student is either a black belt or a blue belt is (b) Either a black belt, a green belt, or a yellow belt.The probability that the student is either a black belt, a green belt, or a yellow belt is

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