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 $20$
$\frac{1}{{100}}$
$\frac{1}{{50}}$
$\frac{1}{{20}}$
$\frac{1}{{10}}$
If in a lottary there are $5$ prizes and $20$ blanks, then the probability of getting a prize is
A coin is tossed twice. The probability of getting head both the times is
Two dice are thrown. The events $A,\, B$ and $C$ are as follows:
$A:$ getting an even number on the first die.
$B:$ getting an odd number on the first die.
$C:$ getting the sum of the numbers on the dice $\leq 5$
State true or false $:$ (give reason for your answer)
Statement : $A=B^{\prime}$
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
An experiment consists of recording boy-girl composition of families with $2$ children. What is the sample space if we are interested in knowing whether it is a boy or girl in the order of their births ?