$4$ coins are tossed once. Find the probability of getting at least $1$ tail.

$A$ problem in Mathematics is given to three students $A, B$,and $C$. Their respective probabilities of solving the problem are $\frac{1}{2}, \frac{1}{3}$,and $\frac{1}{4}$. What is the probability that the problem is solved?

In a single throw of $2$ dice,what is the probability of getting a multiple of $2$ on one die and a multiple of $3$ on the other?

$A$ ball is drawn at random from a box containing $6$ red balls,$4$ white balls and $5$ blue balls. What is the probability that it is red?

If $P(A) = 2/3$,$P(B) = 1/2$ and $P(A \cup B) = 5/6$,then events $A$ and $B$ are

Three $6$-faced dice are thrown together. The probability that all the three show the same number on them is: