When a pair of dice is thrown,what is the probability of getting an even number on each die?

Describe the sample space for the indicated experiment: $A$ die is thrown two times.

$A$ box contains $1$ red and $3$ identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment.

Four dice (six-faced) are rolled. The number of possible outcomes in which at least one die shows $2$ is

$4$-digit numbers are formed using the digits $4, 5, 6, 7, 8, 9$ allowing repetition of the given digits. If a number is chosen at random from those numbers thus formed, then the probability that it is exactly divisible by $3$ is

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. The probability that it is a black card or a face card is