Jim has a bag that contained 5 blue 5 red and 5 green marbles. he drew out 1 marble at a time and then placed it back into the bag.

Question

Jim has a bag that contained  5 blue 5 red and 5 green marbles. he drew out 1 marble at a time and then placed it back into the bag.

anonymous · Answer

2/3
or
0.667

anonymous · Answer

so that is the answer
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anonymous · Answer

*thats for the first draw since the probability of getting a blue marble is 5/15 or 1/3,
red is 5/15 or 1/3 and green is also 5/15 or 1/3
The probability of not getting a red means the probability of getting blue or green marble. then the probability of not getting red is 1/3+1/3=2/3

anonymous · Answer

okay

anonymous · Answer

considering your additional data
then P(blue)=8/15
       P(red) =4/14
       P(green) = 3/15
P(blue or green) = 8/15=3/15
                         = 11/15
                        = 0.733