Question

A bag contains 5 green 7red and3blue balls A ball is drawn at random find the probability of drawing a red ball if we draw a with a blue ball and then red ball find the sample space and probability of drawing a green ball

Answer 1

5 green
7 red
3 blue ..
total num of balls are 15.

drawing of a red ball is 7 / 15
drawing a green ball is 5 /15 =3 ..