The probability of the month of February in a non-leap year having $5$ Thursdays is ............

$A$ bag contains a red ball,a blue ball and a yellow ball,all the balls being of the same size. Kritika takes out a ball from the bag without looking into it. What is the probability that she takes out the
$(i)$ yellow ball?
$(ii)$ red ball?
$(iii)$ blue ball?

One ticket is drawn at random from a bag containing tickets numbered $1$ to $40$. The probability that the selected ticket has a number which is a multiple of $5$ is

One number is selected at random from one-digit natural numbers. The probability of that number being even is $\ldots \ldots \ldots$

Three unbiased coins are tossed simultaneously. Then,the probability of receiving at least two heads is ..........

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