If $P(A) = 0.6,$ then $P(\bar{A}) = $ .............

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

There are boards numbered $1$ to $50$ in a box. One board is selected at random. Find the probability that the number on the board is a prime number.

$A$ balanced die is rolled. The probability of receiving a number smaller than $3$ is ..... .

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

$A$ bag contains $10$ red,$5$ blue and $7$ green balls. $A$ ball is drawn at random. Find the probability of this ball being a
$(i)$ red ball
$(ii)$ green ball
$(iii)$ not a blue ball