If $A$ and $B$ are two independent events,then $P(A/B) = $

Study the given information carefully to answer the question that follows. An urn contains $4$ green,$5$ blue,$2$ red and $3$ yellow marbles. If $3$ marbles are drawn at random,what is the probability that none is green?

$A$ positive integer is selected at random and is divided by $9$. What is the probability that the remainder is not $1$?

From the word $POSSESSIVE$, a letter is chosen at random. The probability of it being $S$ is:

In a box,there are $8$ red,$7$ blue and $6$ green balls. One ball is picked up at random. What is the probability that it is neither red nor green?

In a throw of three dice,the probability that at least one die shows up $1$,is