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 ball is not blue.

If $P(\overline{B}) = 0.81$,then $P(B) = \ldots$

If $P(E) = 0.05$,what is the probability of 'not $E$'?

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. The probability that the card drawn is not an ace is ..........

$A$ game consists of tossing a one rupee coin $3$ times and noting its outcome each time. Hanif wins if all the tosses give the same result,i.e.,three heads or three tails,and loses otherwise. Calculate the probability that Hanif will lose the game.

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.