Question

a bag contains 27 marbles of which 6 are blue and 10 are green. the numbers for other colors are unknown. One marble is drawn from the bag. what is the probability that the marble drawn is not blue

Answer 1

Answer: 7/9

Explanation:

We just want the unknown marble to be anything but blue, so if there are 27 possibilities and 6 blue marbles, we get 27-6= 21/27 which simplifies to 7/9.