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 multiple of $5$. (in $/5$)

$A$ balanced die is thrown once. Find the probability of getting a number smaller than $4$.

An event is very unlikely to happen. Its probability is closest to

The probability of the month of April in any year having $5$ Sundays is ......... (in $/7$)

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 neither white nor black.

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 a multiple of $3$ or $4$?