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A bag contarns 6 white and 4 black balls. Two balls are drawn at random. The probability that they are of the same colour is ......A. `5/7`B. `1/7`C. `7/15`D. `1/15` |
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Answer» Correct Answer - C Total number of balls=10 Required probability=`(""^(6)C_(2)+""^(4)C_(2))/(""^(10)C_(2))` `=(15+6)/45=21/45=7/15` |
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