Mathematics · 2021
JEE Main · 26 August 2021, Shift 2 · Q78
A fair die is tossed until six is obtained on it. Let X be the number of required tosses, then the conditional probability P ( X ≥ 5 ∣ X >2) is:
A fair die is tossed until six is obtained on it. Let $\displaystyle X$ be the number of required tosses, then the conditional probability $\displaystyle \mathrm{P}(\mathrm{X} \geqslant 5 \mid \mathrm{X}>2)$ is :
Official answer
(2)
$\displaystyle \frac{25}{36}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.