If $A$ is a sure event,then the value of $P(\text{not } A)$ is:

Three coins are tossed once. Find the probability of getting no head.

When a pair of six-faced fair dice are thrown,the probability that the sum of the numbers on the two dice is greater than $7$ is:

Two dice are thrown. The probability that the sum of numbers appearing is more than $10$ is:

$A$ bag contains $4$ white,$5$ black and $6$ red balls. If a ball is drawn at random,then what is the probability that the drawn ball is either white or red?

$A$ box contains $6$ red marbles numbered from $1$ through $6$ and $4$ white marbles numbered $12$ through $15$. Find the probability that a marble drawn at random is white and odd-numbered.