Elena has different colored marbles in a bag. She has 4 red marbles, 9 blue marbles, and 2 green marbles. what is the probability that,without looking, she

Elena has different colored marbles in a bag. She has 4 red marbles, 9 blue marbles, and 2 green marbles. what is the probability that,without looking, she will randomly choose a marble that is not blue?

 

there are 15 marbles and 6 are not blue so

 

6/15 = 2/5