Question

A bag contains 1 blue, 2 green, 3 yellow, and 3 red marbles, as shown.

Answer 1

blue marble =1

green marble= 2

yellow marble = 3

red marble = 3

probability of picking a red marble without looking = 3/1+2+3+3

P(red marble)=3/9

P(red marble) =1/3

Answer 2

There are 9 marbles in total in the bag. Since there are 3 red marbles the probability of drawing out a red marble is 3/9 which can be simplified to 1/3