Mathematics · 2020
JEE Main · 9 January 2020, Shift 2 · Q67
A random variable X has the following probability distribution: Then P ( X >2) is equal to:
A random variable $\displaystyle X$ has the following
probability distribution :
Then $\displaystyle \mathrm{P}(\mathrm{X}>2)$ is equal to:
| $\displaystyle \mathrm{X}$ : | $\displaystyle 1$ | $\displaystyle 2$ | $\displaystyle 3$ | $\displaystyle 4$ | $\displaystyle 5$ |
| $\displaystyle \mathrm{P}(\mathrm{X})$ : | $\displaystyle \mathrm{K}^2$ | 2K | K | 2K | $\displaystyle 5 \mathrm{~K}^2$ |
Official answer
(3)
$\displaystyle \frac{23}{36}$
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JEE Main 2020 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.