If the probabilities of boy and girl to be born are same, then in a $4$ children family the probability of being at least one girl, is
$\frac{{14}}{{16}}$
$\frac{{15}}{{16}}$
$\frac{1}{8}$
$\frac{3}{8}$
A problem in Mathematics is given to three students $A, B, C$ and their respective probability of solving the problem is $\frac{1}{2} , \frac{1}{3} $ and $\frac{1}{4}$. Probability that the problem is solved is
Three dice are thrown simultaneously. What is the probability of obtaining a total of $17$ or $18$
Two dice are thrown together. The probability that at least one will show its digit $6$ is
A coin is tossed. If the out come is a head, a die is thrown. If the die shows up an even number, the die is thrown again. What is the sample space for the experiment?
The probability of happening an event $A$ is $0.5$ and that of $B$ is $0.3$. If $A$ and $B$ are mutually exclusive events, then the probability of happening neither $A$ nor $B$ is