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Aptitude | Probability | Question 3

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A box contains 6 black, 5 brown and 2 yellow balls. If 2 balls are selected at random, what is the probability that both are black? (A) 4/23 (B) 5/26 (C) 7/26 (D) 8/15

Answer: (B)

Explanation:

There are total 13 balls in the sample space Probability of choosing any two of them is 13C2. There are total 6 black balls and probability of choosing any two of them is 6C2 Therefore the required answer is 6C2/13C2 = 5/26.



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Last Updated : 16 Sep, 2021
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