Six boys and six girls sit in a row randomly. The probability that the six girls sit together
$\frac{1}{{77}}$
$\frac{1}{{132}}$
$\frac{1}{{231}}$
None of these
Find the probability that when a hand of $7$ cards is drawn from a well shuffled deck of $52$ cards, it contains all Kings.
A purse contains $4$ copper coins $\& \, 3$ silver coins, the second purse contains $6$ copper coins $\& \,2$ silver coins. If a coin is drawn out of one of these purses, then the probability that it is a copper coin is :-
Three integers are chosen at random from the first $20$ integers. The probability that their product is even, is
Three cards are drawn at random from a pack of $52$ cards. What is the chance of drawing three aces
Four persons independently solve a certain problem correctly with probabilities $\frac{1}{2}, \frac{3}{4}, \frac{1}{4}, \frac{1}{8}$. Then the probability that the problem is solved correctly by at least one of them is