The mean and variance of binomial|Probability| JEEMAIN 2022

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JEE MAIN_2022

26-07-2022_S1

Question

The mean and variance of a binomial distribution are $\alpha$ and $\frac{\alpha}{3}$ respectively. If $P(X=1)=\frac{4}{243}$, then $P(X=4$ or 5) is equal to i

Select the correct option:

A

$\frac{5}{9}$

B

$\frac{64}{81}$

C

$\frac{16}{27}$

D

$\frac{145}{243}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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