The probability that a non-leap year selected at random will contain $53$ Sundays is

Harpreet tosses two different coins simultaneously (say,one is of $Rs. 1$ and other of $Rs. 2$). What is the probability that she gets at least one head?

The probability of getting the number $7$ while throwing a balanced die once is ...........

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. Find the probability that the card drawn is a king of a black suit.

$A$ 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.

Total number of outcomes in the experiment of tossing an unbiased coin twice is ..........