From a class of $12$ girls and $18$ boys,two students are chosen randomly. What is the probability that both of them are girls?

Three dice are thrown. Find the chance of getting a sum of $16$.

Study the given information carefully to answer the question that follows. An urn contains $4$ green,$5$ blue,$2$ red,and $3$ yellow marbles. If $3$ marbles are drawn at random,what is the probability that at least $1$ is yellow?

In a class,$30 \%$ of students passed English,$20 \%$ passed French and $10 \%$ passed both. If a student is selected at random,what is the probability that he has passed English or French?

$A$ bag contains $19$ tickets numbered from $1$ to $19$. $A$ ticket is drawn and then another ticket is drawn without replacement. The probability that both the tickets will show even numbers is:

From a pack of $52$ cards,two cards are drawn in succession one by one without replacement. The probability that both are aces is