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Mathematics · JEE | PROBABILITY
हिन्दीAn urn contains 10 black and 5 white balls. Two balls are drawn one after the other without replacement. What is the probability that both drawn balls are black?
View Answer & Solution
Correct answer · Option D
\( \frac{2}{7} \)
Explanation
Probability = \( \frac{10}{15} \times \frac{9}{14} = \frac{2}{3} \times \frac{9}{14} = \frac{3}{7} \times \frac{2}{2} \) wait: \( \frac{2}{3} \times \frac{9}{14} = \frac{18}{42} = \frac{3}{7} \). Let's check options: Option 2 is 3/7.
