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You choose a marble at random from a bag containing 12 red, 11 blue, 3 green, 12 yellow, and 22 black marbles. The marble is red. What is the probability of this event
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You choose a marble at random from a bag containing 12 red, 11 blue, 3 green, 12 yellow, and 22 black marbles. The marble is red. What is the probability of this event

User Thelma
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12/60, or 1/5. you would add up the total amount of marbles for your denominator and take the total amount of red marbles for your numerator.
User Andrew Schulman
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