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A bag contains 8 red and 4 green balls. Find the probability (a) ball drawn is red when one ball is selected at random. (b) all the 4 balls are green when four balls are drawn at random. (c) Two balls are red and one ball is green when three balls are drawn at r (d) Three balls are drawn and none of them is green. Select the correct answer from above options

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n(s) = 8 + 4 = 12

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