Find the probability that a leap year has $53$ Thursdays.

$A$ card is selected at random from a well-shuffled pack of $52$ cards. Find the probability that the selected card is a seven.

Apoorv throws two dice once and computes the product of the numbers appearing on the dice. Peehu throws one die and squares the number that appears on it. Who has the better chance of getting the number $36$? Why?

If $P(C) = \frac{2}{5}$,then $P(\bar{C}) = \ldots \ldots \ldots$

There are $5$ white,$7$ red,$4$ black and $2$ blue identical balls in a box. One ball is selected at random from the box. Find the probability that the selected ball is either red or black. (in $/18$)

$A$ 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.