A pack of cards contains $4$ aces, $4$ kings, $4$ queens and $4$ jacks. Two cards are drawn at random. The probability that at least one of these is an ace, is
$\frac{9}{{20}}$
$\frac{3}{{16}}$
$\frac{1}{6}$
$\frac{1}{9}$
If four vertices of a regular octagon are chosen at random, then the probability that the quadrilateral formed by them is a rectangle is
If $12$ identical balls are to be placed in $3$ identical boxes, then the probability that one of the boxes contains exactly $3$ balls is :
Out of $40$ consecutive natural numbers, two are chosen at random. Probability that the sum of the numbers is odd, is
From eighty cards numbered $1$ to $80$, two cards are selected randomly. The probability that both the cards have the numbers divisible by $4$ is given by
Probability that the product of the outcomes when three dice are rolled simultaneously is divisible by $4$ is equal to