$A$ fair coin is tossed $200$ times and the tail occurs $92$ times,then find the probability of getting a head.

Of the $50$ students in a class, $22$ are girls. The probability that a student who gets first rank is a boy is .............

The probability of a month of August having $5$ Wednesdays is ............

The probability of the event 'the sun rises in the east' is .............

Out of $30$ days, the forecast predicted by the weather department proved to be true on $20$ days. If one day is chosen at random from these $30$ days, what is the probability that the forecast proved to be false?

$A$ recent survey found that the ages of workers in a factory is distributed as follows:

Age (in years)	$20-29$	$30-39$	$40-49$	$50-59$	$60$ and above
Number of workers	$38$	$27$	$86$	$46$	$3$

If a person is selected at random,find the probability that the person is $40$ years or more.