A box contains 4 white 2 red and 3 black marbles One marble

A box contains 4 white, 2 red, and 3 black marbles. One marble is chosen at random, and it is not black. Find the probability that it is white. (Enter your answer as a fraction.)

Solution

A box contains 4 white, 2 red, and 3 black marbles. One marble is chosen at random, and it is not black. Find the probability that it is white. (Enter your answer as a fraction.)

Number of non black marbles=6

Number of white marbles=4

probability (white/ non black) =4/6 =2/3