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Bayes' Theorem - Class XII

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Multiple Choice

Box I contains $2$ white and $3$ red balls and box II contains $4$ white and $5$ red balls. One ball is drawn at random from one of the boxes and is found to be red. Then, the probability that it was from box II, is?

  1. $\cfrac{54}{44}$
  2. $\cfrac{54}{14}$
  3. $\cfrac{54}{104}$
  4. None of these
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