The probability of an impossible event,i.e.,$P(\phi)$,is:

From a well-shuffled pack of $52$ cards,one card is drawn at random. The probability that the card drawn is an ace is

Two dice are thrown simultaneously. What is the probability of obtaining a multiple of $2$ on one of them and a multiple of $3$ on the other?

If a coin is tossed $n$ times,then the probability that the head comes up an odd number of times is:

$2$ dice are thrown. Find the odds against getting the sum $6$.

The probability that a leap year selected at random contains either $53$ Sundays or $53$ Mondays is