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

The probability of the month of April of a leap year having $5$ Fridays is $\ldots \ldots \ldots$

$A$ triangular target with sides measuring $5 \, cm, 12 \, cm$,and $13 \, cm$ is drawn on a square board with side $20 \, cm$. Find the probability that a dart hitting the board hits the target.

Two unbiased dice are thrown once. Write all the possible outcomes of this experiment. What is the probability that the sum of the numbers on the two dice is a multiple of $3$ and $4$?

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 ball is red.

The probability of the month of February in a leap year having $5$ Fridays is ..........