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A Basket Contains 3 Blue, 5 Black And 3 Red Balls. If 3 Balls Are Drawn At Random What Is The Probability That All Are Black ? |
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Answer» Ways of selecting 3 BLACK BALLS out of 5 - 5C3 TOTAL ways of selecting 3 balls - 11C3 The required probability = (5C3 / 11C3 ) = (10/165) = (2/33) Ways of selecting 3 black balls out of 5 - 5C3 Total ways of selecting 3 balls - 11C3 The required probability = (5C3 / 11C3 ) = (10/165) = (2/33) |
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