$A$ die is rolled,find the probability that an even number is obtained.

Cards are drawn one by one without replacement from a pack of $52$ cards. The probability that $10$ cards will precede the first ace is

Four persons are selected at random from a group of $3$ men,$2$ women and $4$ children. The chance that exactly two of them are children is

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

Two coins are tossed. Let $A$ be the event that the first coin shows head and $B$ be the event that the second coin shows a tail. The two events $A$ and $B$ are:

Two cards are drawn from a pack of $52$ cards. What is the probability that at least one of the cards drawn is an ace?