If $P(A)$ denotes the probability of an event $A$,then

$A$ lot consists of $144$ ball pens of which $20$ are defective and the others are good. Nuri will buy a pen if it is good,but will not buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that
$(i)$ She will buy it?
$(ii)$ She will not buy it?

The probability of the month of August in any year having $5$ Mondays is ..........

Total number of outcomes in the experiment of rolling two balanced dice once is ..........

Five cards - the ten,jack,queen,king and ace of diamonds,are well-shuffled with their face downwards. One card is then picked up at random.
$(i)$ What is the probability that the card is the queen?
$(ii)$ If the queen is drawn and put aside,what is the probability that the second card picked up is $(a)$ an $ace?$ $(b)$ a $queen?$

$A$ balanced die is rolled once. Then,the probability that the number on the die is a prime number is .........