Find the mean of the Binomial distribution $B\left(4, \frac{1}{3}\right)$.

$A$ box contains $20\%$ defective bulbs. Five bulbs are chosen randomly from this box. The probability that exactly $3$ of the chosen bulbs are defective is

Let a die be rolled $n$ times. Let the probability of getting odd numbers seven times be equal to the probability of getting odd numbers nine times. If the probability of getting even numbers twice is $\frac{k}{2^{15}}$,then $k$ is equal to:

$A$ pair of dice is thrown $6$ times. What is the probability of getting a $4$ exactly seven times?

$A$ die is thrown $100$ times. If the success is defined as getting an even number,then the variance of the number of successes is:

For which binomial distribution are the mean $= 6$ and variance $= 2$?