Mathematics · 2022
JEE Main · 29 July 2022, Shift 2 · Q16
Bag I contains 3 red, 4 black and 3 white balls and Bag II contains 2 red, 5 black and 2 white balls. One ball is transferred from Bag I to Bag II…
Bag I contains $\displaystyle 3$ red, $\displaystyle 4$ black and $\displaystyle 3$ white balls and Bag II contains $\displaystyle 2$ red, $\displaystyle 5$ black and $\displaystyle 2$ white balls. One ball is transferred from Bag I to Bag II and then a ball is drawn from Bag II. The ball so drawn is found to be black in colour. Then the probability, that the transferred ball is red, is :
Official answer
(2)
$\displaystyle \frac{5}{18}$
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.