The probability of getting two heads in the experiment of tossing an unbiased coin twice is .........

Two balanced dice are rolled simultaneously. Then,the probability that the sum of numbers on the dice is $2$ is ............

$12$ defective ballpens are mixed with $132$ non-defective ballpens. They all look alike. $A$ ballpen is selected at random from that lot. Find the probability that a defective ballpen is selected.

Two dice are thrown together. Find the probability that the product of the numbers on the top of the dice is
$(i) \, 6$
$(ii) \, 12$
$(iii) \, 7$

When a balanced die is rolled,the probability of getting a number greater than $4$ on it is ..........

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