If $X$ is a binomial variable with range $\{0, 1, 2, 3, 4\}$ and $P(X=3) = 3P(X=4)$,then the parameter $p$ of the binomial distribution is:

The probability that a person is not a sportsperson is $\frac{1}{6}$. Then the probability that out of the $6$ members of the family,$5$ are sportspersons is

An irregular six-faced die is thrown. The probability that in $5$ throws it will give $3$ even numbers is twice the probability that it will give $2$ even numbers. The number of times,in $6804$ sets of $5$ throws,you expect to get no even number is:

If two coins are tossed $5$ times,what is the probability of getting $5$ heads and $5$ tails?

$A$ fair coin is tossed $2n$ times. What is the probability that the number of heads and tails obtained in these $2n$ trials are not equal?

Minimum number of times a fair coin must be tossed,so that the probability of getting at least one head,is more than $99 \%$ is