you have a bag with 9 red marbles in it . you close your eyes and pull out a marble. What is the probability that you would pull out a red marble?

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irspow
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You have a bag with 9 red marbles in it and randomly pull out a marble.  The probability of you pulling out a red marble is:

9/9=1   (100%)

:)
if the bag only has 9 red marbles in it and no other marbles then the probability would be 9/9. 100%