The probability of the month of April in a non-leap year having $5$ Sundays is .... . (in $/7$)

There are $5$ red,$8$ white,and $4$ green balls in a box. $A$ ball is drawn at random from the box. Find the probability that the ball drawn is not green.

Which of the following cannot be the probability of an event?

The king,queen,and jack of clubs are removed from a deck of $52$ playing cards and then well shuffled. Now,one card is drawn at random from the remaining cards. Determine the probability that the card is:
$(i)$ a heart
$(ii)$ a king

Cards with numbers $2$ to $101$ are placed in a box. $A$ card is selected at random. Find the probability that the card has
$(i)$ an even number
$(ii)$ a square number

$A$ bag contains slips numbered from $1$ to $100$. If Fatima chooses a slip at random from the bag,it will either be an odd number or an even number. Since this situation has only two possible outcomes,the probability of each is $\frac{1}{2}$. Justify.