Let $M$ be the maximum value of the product of two positive integers when their sum is $66$. Let the sample space $S=\left\{x \in Z: x(66-x) \geq \frac{5}{9} M\right\}$ and the event $A=\{ x \in S : x$ is a multiple of $3$ $\}$. Then $P ( A )$ is equal to
$\frac{15}{44}$
$\frac{1}{3}$
$\frac{1}{5}$
$\frac{7}{22}$
A box contains $3$ white and $2$ red balls. A ball is drawn and another ball is drawn without replacing first ball, then the probability of second ball to be red is
In a relay race there are five teams $A, \,B, \,C, \,D$ and $E$. What is the probability that $A, \,B$ and $C$ finish first, second and third, respectively.
One card is drawn from each of two ordinary packs of $52$ cards. The probability that at least one of them is an ace of heart, is
From a pack of $52$ cards two are drawn with replacement. The probability, that the first is a diamond and the second is a king, is
In a throw of a die, what is the probability of getting a number less than $7$