If total outcomes and favorable outcomes are dented by $\mathrm{n}$ and $\mathrm{m}$ respectively, then _______.

If $\mathrm{r}$ objects to be arranged out of $\mathrm{n}$ objects with repetation. Then total permutations =_______.

What is probability of getting four same suit card from pack of 52 cards?

Let $\mathrm{A}$ and $\mathrm{B}$ be any two events of sample space $\mathrm{S}$ , then $\mathrm{P}\left(\mathrm{A}\right)·\mathrm{P}(\mathrm{B}/\mathrm{A})$ =_______.

Two events $\mathrm{A}$ and $\mathrm{B}$ are called independent events if _______.

If $\mathrm{c}$ is a constant, then $\mathrm{E}\left(\mathrm{c}\right)$ =_______.

If $\mathrm{c}$ is a constant, then $\mathrm{V}\left(\mathrm{C}\right)$ =________.

$(\mathrm{X},\mathrm{Y})$ is called a two dimensional discrete random variable, if the possible values of $(\mathrm{X},\mathrm{Y})$ are _______.

Let $\mathrm{E}\left(\mathrm{x}\right)=5$ and $\mathrm{\sigma }\left(\mathrm{x}\right)=5$ , then $\mathrm{E}\left({\mathrm{x}}^2\right)=$ _______.

If $\mathrm{P}\left(\mathrm{A}\right)=\frac{9}{ 10 }$ , then $\mathrm{P}(\mathrm{A}\text{'})=$ _______.