From a pack of $52$ cards,two cards are drawn in succession one by one without replacement. The probability that both are aces is

What is the chance that a leap year,selected at random,will contain $53$ Sundays (in $/7$)?

Two cards are drawn one by one from a pack of cards. The probability of getting the first card as an ace and the second as a coloured card is (the first card is not replaced before drawing the second card).

If a dice is thrown twice,then the probability of getting $1$ in the first throw only is

For independent events $A_1, A_2, \dots, A_n$, $P(A_i) = \frac{1}{i + 1}$ for $i = 1, 2, \dots, n$. Then the probability that none of the events will occur is:

$A$ box contains $4$ white pens and $2$ black pens. Another box contains $3$ white pens and $5$ black pens. If one pen is selected from each box,then the probability that both the pens are white is equal to