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There are 3 red socks, 4 green socks and 3 blue socks, you choose 2 socks. The probability that they are of the same colour is _____. (A) 1/5 (B) 7/30 (C) 1/4 (D) 4/15 |
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Answer» Correct option is (D) 4/15 Required probability = 3C\(_2\) + 4C\(_ 2\) + 3C\(_ 2\) / 10C\(_ 2\) = 4/15 |
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