In a binomial distribution,the mean is $18$ and the variance is $12$,then $p = . . . . . .$

If the probability that a student is not a swimmer is $\frac{1}{5}$,then the probability that out of $5$ students one is a swimmer is

An unbiased coin is tossed $8$ times. The probability of obtaining at least one head and at least one tail is

$A$ die is tossed thrice. If getting a four is considered a success,then the mean and variance of the probability distribution of the number of successes are

For Binomial distribution $B \left(10, \frac{1}{2} \right)$,if $P(X \leq 2) = m \left( \frac{1}{2} \right)^{10}$,then $m =$ . . . . . . .

$A$ die is thrown $6$ times. If 'getting an odd number' is a success,what is the probability of at least $5$ successes?