The event $A$ is independent of itself if and only if $P(A) = $
$0$
$1$
$0, 1$
None of these
A card is drawn from a well shuffled pack of cards. The probability of getting a queen of club or king of heart is
Five horses are in a race. $Mr. \,A$ selects two of the horses at random and bets on them. The probability that $Mr.\, A$ selected the winning horse is
Let $A$ be a set of all $4 -$digit natural numbers whose exactly one digit is $7 .$ Then the probability that a randomly chosen element of $A$ leaves remainder $2$ when divided by $5$ is ..... .
The probability of choosing at random a number that is divisible by $6$ or $8$ from among $1$ to $90$ is equal to
A card is selected from a pack of $52$ cards. Calculate the probability that the card is an ace