The probability expressed as a percentage of a particular occurrence can never be

$A$ child's game has $8$ triangles of which $3$ are blue and the rest are red,and $10$ squares of which $6$ are blue and the rest are red. One piece is lost at random. Find the probability that it is a
$(i)$ triangle
$(ii)$ square
$(iii)$ square of blue colour
$(iv)$ triangle of red colour

If $P(A) : P(\bar{A}) = 3 : 2$,then $P(A) = \dots$

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. The probability of that card being a jack of a black suit is .........

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

The probability of the sun rising in the east is ..........