$A$ number is chosen at random from the single-digit natural numbers. The probability that the number chosen is a multiple of $3$ is ...........

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. The probability of that card being a card of red suit is ..........

The probability of a month of February having $5$ Mondays in a leap year is ............

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

$A$ 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 having age from $30$ to $39$ years.

The maximum value of the probability of any event is ...........