Question

Roberto drew a marble at random from a bag containing 7 blue, 2 red, 8 green, and 6 black marbles. What is the probability that he picked a marble that is Not blue?

Answer 1

16/23

Explanation:

Total number of marbles: 7 + 2 + 8 + 6 = 23

Blue marbles: 7

Not blue marbles: 23 - 7 = 16

p(not blue) = 16/23