If in a lottary there are $5$ prizes and $20$ blanks, then the probability of getting a prize is
$\frac{1}{5}$
$\frac{2}{5}$
$\frac{4}{5}$
None of these
Let two fair dices $A$ and $B$ are thrown. Then the probability that number appears on dice $A$ is greater than number appears on dice $B$ is
The two events $A$ and $B$ have probabilities $0.25$ and $0.50$ respectively. The probability that both $A$ and $B$ occur simultaneously is $0.14$. Then the probability that neither $A$ nor $B$ occurs is
A die is thrown, find the probability of following events: A number less than or equal to one will appear,
Four coins are tossed. The probability that at least one head turns up, is
One card is drawn from a well shuffled deck of $52$ cards. If each outcome is equally likely, calculate the probability that the card will be not a black card.