In a single throw of $2$ dice,what is the probability of getting a total of $7$?

Five-digit numbers are formed using the digits $1, 2, 3, 4, 5, 6$,and $8$. What is the probability that they have even digits at both the ends?

What is the probability that when one die is thrown,the number appearing on top is even?

Two numbers are selected at random from $1, 2, 3, \dots, 100$ and are multiplied. The probability, correct to two decimal places, that the product thus obtained is divisible by $3$ is:

From a well-shuffled pack of $52$ cards,one card is drawn at random. The probability that the card drawn is an ace is

$4$ coins are tossed once. Find the probability of $4$ tails.