Two cards are drawn at random from a pack of $52$ cards. The probability that both are the cards of spade is
$\frac{1}{{26}}$
$\frac{1}{4}$
$\frac{1}{{17}}$
None of these
A seven digit number is formed using digits $3 ,3,4,4,4,5,5 .$ The probability, that number so formed is divisible by $2,$ is ..... .
A coin is based so that a head is twice as likely to occur as a tail. If the coin is tossed $3$ times, then the probability of getting two tails and one head is-
A bag contains $8$ black and $7$ white balls. Two balls are drawn at random. Then for which the probability is more
Find the probability that when a hand of $7$ cards is drawn from a well shuffled deck of $52$ cards, it contains atleast $3$ Kings.
Three of the six vertices of a regular hexagon are chosen at random. The probability that the triangle with these three vertices is equilateral, is equal to