A bag contains 8 green marbles,5 blue marbles, and 4 white marbles,If one marble is drawn from the bag, what is the probability of drawing a white marble and a green marble (on the same draw)

Answer 1

Since you are drawing ONE marble, the prob( white AND green) = 0
That should have been obvious, how can you have a white and a green marble at the same time.
My question to you...
What is the probability if drawing a white OR a green ?

Answer 2

The answer would be 2 by 15

Answer 3

You couldn't have two different answers.
There are 12 white or green marbles
so prob(a white or green) = 12/ 17