$A$ card is drawn from a well-shuffled deck of $52$ cards. Find the probability of drawing a face card.

Two integers are chosen at random and multiplied. The probability that the product is an even integer is

The probability that a leap year will have $53$ Fridays or $53$ Saturdays is

From a pack of $52$ cards,$4$ cards are drawn. What is the probability that it has one ace,one king,one queen and one jack?

$A$ locker can be opened by dialing a fixed three-digit code (between $000$ and $999$). $A$ stranger who does not know the code tries to open the locker by dialing three digits at random. The probability that the stranger succeeds at the $k^{th}$ trial is

$A$ card is drawn at random from a pack of $100$ cards numbered $1$ to $100$. The probability of drawing a number which is a perfect square is