If $A$ and $B$ are two events of a random experiment,$P(A) = 0.25$,$P(B) = 0.5$ and $P(A \cap B) = 0.15$,then $P(A \cap \bar{B}) = $

Two friends $A$ and $B$ apply for a job in the same company. The probability of $A$ getting selected is $\frac{2}{5}$ and that of $B$ is $\frac{4}{7}$. Then the probability that one of them is selected is:

$A$ family with three children is chosen at random. The probability that the oldest and youngest children are of the same gender is

The probability of getting head and tail alternately in three throws of a coin (or a throw of three coins) is:

If two dice are thrown simultaneously,then the probability that the sum of the numbers which come up on the dice is more than $5$ is:

Assume that Sachin Tendulkar gets out only in an odd-numbered over in a $50$-over one-day international cricket match. Find the probability that he gets out in an over that is a multiple of $9$.