In an oratory competition,$30$ students participated,out of which $12$ are boys. Find the probability that the first prize is won by a girl.

Find the probability of getting $51$ marks out of $50$ marks.

$A$ 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 ..........

Here is an extract from a mortality table.

Age (in years)	Number of persons surviving out of a sample of one million
$60$	$16090$
$61$	$11490$
$62$	$8012$
$63$	$5448$
$64$	$3607$
$65$	$2320$

What is the probability that a person aged $61$ will live for $4$ years?

$A$ 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.

When a balanced die is thrown,find the probability of getting an odd number.