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7. A bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. You choose a marble, replace it, in choose again. What is P(red, then blue)?

A. 77/164
B. 19/41
C. 90/1681
D. 45/41
I absolutely know is is C. 90/1681 but I need someone to help me work through it because I need to show how I got to the answer. Thank You!

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1 answer

  1. you're kidding, right? Why not show your work, so we can see whether you did it right...
    41*41 = 1681 ...

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