The probability of getting a bad egg in a lot of $400$ eggs is $0.035$ The number of bad eggs in the lot is
 

In a single throw of a die, find the probability of getting an odd prime number.

In a single throw of a die, find the probability of getting a number which is multiple of $3$ or $4$. 

A bag contains $5$ red, $8$ white and $7$ black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is red or white.

A bag contains $5$ red, $8$ white, and $7$ black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is not black.

A bag contains $5$ red, $8$ white and $7$ black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is neither white nor black.