The probability of getting an even number while throwing a balanced die once is ...........

There are $5$ white,$7$ red,$4$ black and $2$ blue identical balls in a box. One ball is selected at random from the box. Find the probability that the selected ball is either red or black. (in $/18$)

Two unbiased dice are thrown once. Write all the possible outcomes of this experiment. What is the probability that the sum of numbers on two dice is greater than $9$?

$A$ die has its six faces marked ${0, 1, 1, 1, 6, 6}$. Two such dice are thrown together and the total score is recorded.
$(i)$ How many different scores are possible?
$(ii)$ What is the probability of getting a total of $7$?

The probability of the month of August in any year having $5$ Mondays is ..........

In any situation that has only two possible outcomes,each outcome will have a probability of $\frac{1}{2}$. True or false? Why?