Two balanced dice are rolled simultaneously. Then,the probability that the sum of numbers on the dice is $13$ is ..............

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.

$A$ game consists of spinning an arrow which comes to rest pointing at one of the regions ($1, 2$ or $3$). Are the outcomes $1, 2$ and $3$ equally likely to occur? Give reasons.

Two balanced dice are rolled simultaneously. The probability that the product of numbers on two dice is even is ......

$A$ balanced die is rolled once. Then,the probability that the number on the die is a prime number is .........

Find the probability that the month of July in any year has $5$ Sundays.