Question

What is the probability $\text{P(E)}$ of an event $\text{E}$?

Answer 1

In an experiment, the probability of an event is the likelihood of the occurrence of that event.

If $\text{P(E)}$ represents the probability of an event $\text{E}$, then

$\text{P(E)}=\frac{\text{Number of outcomes favorable to event E}}{\text{Number of all possible outcomes}}$, $0\le \text{P(E)}\le 1$

$\text{P(E)}=0$ if and only if $\text{E}$ is an impossible event.

$\text{P(E)}=1$ if and only if $\text{E}$ is a sure event.