The probability of the month of December in any year having $5$ Saturdays is $\ldots \ldots \ldots$

The probability of a leap year having $53$ Wednesdays is ...........

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. The probability of that card being an ace is ........

Box $A$ contains $25$ slips of which $19$ are marked $Rs. 1$ and others are marked $Rs. 5$ each. Box $B$ contains $50$ slips of which $45$ are marked $Rs. 1$ each and others are marked $Rs. 13$ each. Slips of both boxes are poured into a third box and reshuffled. $A$ slip is drawn at random. What is the probability that it is marked other than $Rs. 1$?

Two balanced dice are rolled simultaneously. The probability that the product of numbers on two dice is even is ......

$A$ balanced die is rolled twice. Then,the probability that the sum of numbers received in two trials is $12$ or less than $12$ is ...........