Question

You randomly draw a marble from a bag of marbles that contains 7 blue marbles, 2 green marbles, and 1 red marble.
What is P? (not draw a blue marble)
If necessary, round your answer to 2 decimal places.

Answer 1

Procedure: 
7 blue + 2 green + 1 red= 10 

the answer for not drawing a blue one would be 3/10 
or 30% or 0.3 because 2 + 1= 3 and we have already eliminated the seven blue ones. So we have a 30% of drawing a green or red marble.