Question:

Two brothers X and Y appeared for an exam. Let:
- $ A $: event that X passed
- $ B $: event that Y passed
Given: $$ P(A) = \frac{1}{7},\quad P(B) = \frac{2}{9} $$ Assuming independence, find the probability that both passed, i.e., $ P(A \cap B) $.

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For independent events, the probability that both occur is the product of their individual probabilities.
Updated On: May 20, 2025
  • \( \frac{1}{63} \)
  • \( \frac{2}{35} \)
  • \( \frac{2}{63} \)
  • \( \frac{9}{14} \)
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The Correct Option is C

Solution and Explanation

Assuming the events A and B are independent, we use: \[ P(A \cap B) = P(A) \cdot P(B) = \frac{1}{7} \cdot \frac{2}{9} = \frac{2}{63} \]
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