Two balanced dice are rolled. Find the probability that the sum of numbers on two dice is a multiple of $5$.

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

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

$A$ lot consists of $48$ mobile phones of which $42$ are good,$3$ have only minor defects,and $3$ have major defects. Varnika will buy a phone if it is good,but the trader will only buy a mobile if it has no major defect. One phone is selected at random from the lot. What is the probability that it is
$(i)$ acceptable to Varnika?
$(ii)$ acceptable to the trader?

$A$ bag contains $24$ balls of which $x$ are red,$2x$ are white,and $3x$ are blue. $A$ ball is selected at random. What is the probability that it is:
$(i)$ not red?
$(ii)$ white?