Mrs. Miller’s students pull marbles from a bag containing two red, three blue, and five green marbles. They pull a marble, don’t replace it and then pull another marble. What is the probability of a student selecting two red marbles in a row?

1/45

Step-by-step explanation:

Probability of pulling a red marble is 2/10.  If you do not replace the marble, then there are only 9 marbles left in the bag.  Assuming you pulled a red marble the first time, this leaves only 1 red marble in the bag.  So, the probability of pulling a red marble the second time is 1/9.  The probability of pulling two red marbles is (2/10)(1/9) = 1/45

A

Step-by-step explanation:

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