Posted by **dillon** on Friday, April 13, 2007 at 5:52pm.

a bag contains 33 green marbles and 25 blue marbles. you select a marble at random from the bag. find the theoretical probability of selecting a blue marble. thanks

Pr(blue)= number blue/total marbles

- math -
**10th Grader**, Thursday, December 5, 2013 at 9:22pm
First, you would need to add 33+25 because you need to find the total number of marbles that are in the bag.

algebraic expression: 33+25=x

x=58

Next you would need to take the amount of blue marbles and make a fraction over the total amount. The fraction is 25/58. Therefore, the probability of selecting a blue marble is 25/38

- math -
**8th Grader**, Thursday, December 5, 2013 at 9:23pm
First, you would need to add 33+25 because you need to find the total number of marbles that are in the bag.

algebraic expression: 33+25=x

x=58

Next you would need to take the amount of blue marbles and make a fraction over the total amount. The fraction is 25/58. Therefore, the probability of selecting a blue marble is 25/58

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