If $P(\bar{B}) = 0.55$,then $P(B) = $ ...........

If $P(A) = 0.54$,then $P(\overline{A}) = \ldots$

Box $A$ contains $25$ slips of which $19$ are marked $Rs. 1$ and others are marked $Rs. 5$ each. Box $B$ contains $50$ slips of which $45$ are marked $Rs. 1$ each and others are marked $Rs. 13$ each. Slips of both boxes are poured into a third box and reshuffled. $A$ slip is drawn at random. What is the probability that it is marked other than $Rs. 1$?

One number is selected at random from one-digit natural numbers. The probability of that number being even is $\ldots \ldots \ldots$

An unbiased coin is tossed thrice. Find the probability of the following event:
$A:$ Exactly $2$ heads are received.

Two balanced dice are rolled. Find the probability that the sum of numbers on two dice is even.