In a sample study of $642$ people,it was found that $514$ people have a high school certificate. If a person is selected at random,the probability that the person has a high school certificate is:

From the list of telephone numbers of $100$ employees of a factory, the following frequency distribution of their unit place digit (for example, in the number $25828573$, the unit place digit is $3$) is given in the table below:

Unit digit	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$
Frequency	$8$	$9$	$12$	$15$	$10$	$7$	$12$	$10$	$9$	$8$

Find the probability that a randomly selected employee has a telephone number with unit digit $3$.

In cricket,Rohit hits a century in $4$ innings out of $10$ innings. Find the probability that he did not hit a century.

An insurance company selected $1600$ drivers at random in a particular city to find a relationship between age and accidents. The data is as below:

Age group of drivers	Number of accidents in one year $(0, 1, 2, 3, >3)$
$18-25$	$320, 125, 75, 45, 30$
$25-40$	$400, 45, 50, 15, 10$
$40-55$	$150, 85, 13, 8, 10$
Above $55$	$150, 25, 17, 20, 7$

Find the probability of the following event for a driver selected at random from the city: being $25-40$ years of age and having exactly $2$ accidents in a year.

$A$ coin is tossed $50$ times,in which $23$ times head comes up and $27$ times tail comes up. Calculate the probability for each event.

Out of $700$ women in an area,$280$ are employed. Find the probability that a randomly selected woman from those women is employed.