Question

What is the probability of the certain event of an experiment?

Answer 1

hi frnd here is ur ans,

Probability of the certain event of an experiment is 1 .

...I hope this will help you please mark as brainliest ☺

Answer 2

Suppose an event E can happen in r ways out of a total of n possible equally likely ways.

Then the probability of occurrence of the event (called its success) is denoted by

\displaystyle{P}{\left({E}\right)}=\frac{r}{{n}}P(E)=nr

Continues below ⇩

The probability of non-occurrence of the event (called its failure) is denoted by

\displaystyle{P}{\left(\overline{{E}}\right)}=\frac{{{n}-{r}}}{{n}}={1}-\frac{r}{{n}}P(E)=nn−r​=1−nr​

Notice the bar above the E, indicating the event does not occur.

Thus,
+{P}={1}P(E)+P(E)=1

In words, this means that the sum of the probabilities in any experiment is \displaystyle{1}1.