$A$ bag contains $5$ white and $3$ black balls. If two balls are drawn at random,what is the probability that one ball is white and the other is black?

$A$ box contains $8$ red,$3$ white and $9$ blue balls. If $3$ balls are drawn from the box at random one after the other without replacement,then the probability that they are $2$ red balls and $1$ white ball is

$A$ bag contains $21$ toys numbered $1$ to $21$. $A$ toy is drawn and then another toy is drawn without replacement. The probability that both toys will show even numbers is

Out of $100$ students,two sections of $40$ and $60$ are formed. If you and your friend are among the $100$ students,what is the probability that you both enter the same section (in $/33$)?

In a well-shuffled deck of $52$ cards,if two cards are drawn at random,what is the probability that both cards are kings?

What is the probability that a number formed using all the digits $1, 2, 3, 4, 5$ is divisible by $4$?