Total number of outcomes in the experiment of tossing an unbiased coin twice is ..........

Two balanced dice are rolled. Find the probability that the sum of numbers on two dice is a multiple of $5$.

The probability of scoring $100$ marks in a question paper of $100$ marks is ................

When a die is thrown,the probability of getting an odd number less than $3$ is

$A$ carton consists of $100$ shirts of which $88$ are good,$8$ have minor defects and $4$ have major defects. Jimmy,a trader,will only accept the shirts which are good,but Sujatha,another trader,will only reject the shirts which have major defects. One shirt is drawn at random from the carton. What is the probability that
$(i)$ it is acceptable to Jimmy? $\quad (ii)$ it is acceptable to Sujatha?

There are chits numbered $1$ to $20$ in a box. One chit is drawn at random. Find the probability that the number on the chit is a prime number.