If the mean and variance of a binomial variable $X$ are $2.4$ and $1.44$ respectively,then the parameters $n$ and $p$ are respectively

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

Mean and variance of a binomial probability distribution are $4$ and $\frac{4}{3}$ respectively. Then the probability of at least two successes is equal to:

$A$ coin is tossed $n$ times. The probability of getting a head at least once is greater than $0.8$. Then, the least value of such $n$ is:

It is observed that there will be $25$ blood specimens of normal persons,if $100$ blood samples are tested. If $10$ specimens are sent to a laboratory for testing,then the probability of having at least two specimens of normal persons is

If five dice are thrown simultaneously, then the probability that at least three of them show the same numbered face is