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6. A bag contains 15 red balls and 20 blackballs. Each ball is numbered either 1 or2 or 3. 20% of the red balls arenumbered 1 and 40% of them arenumbered 3. Similarly, among the blackballs, 45% are numbered 2 and 30% arenumbered 3. A boy picks a ball atrandom. He wins if the ball is red andnumbered 3 or if it is black andnumbered 1 or 2. What are the chancesof his winning?4 |
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