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
$\frac{{14}}{{16}}$
$\frac{{15}}{{16}}$
$\frac{1}{8}$
$\frac{3}{8}$
Three coins are tossed once. Find the probability of getting atleast $2$ heads.
Let Ajay will not appear in JEE exam with probability $\mathrm{p}=\frac{2}{7}$, while both Ajay and Vijay will appear in the exam with probability $\mathrm{q}=\frac{1}{5}$. Then the probability, that Ajay will appear in the exam and Vijay will not appear is :
A die is thrown. Describe the following events : $A$ : a number less than $7.$ , $B:$ a number greater than $7.$ , $C$ : a multiple of $3.$ Find the $B \cup C$
From $10,000$ lottery tickets numbered from $1$ to $10,000$, one ticket is drawn at random. What is the probability that the number marked on the drawn ticket is divisible by $20$
The probability of obtaining sum ‘$8$’ in a single throw of two dice