A bag contains 22 red marbles, 8 white marbles, and 3 gray marble. You randomly pick out a marble, record its color, and put it
back in the bag. You repeat this process 45 times. How many white or gray marbles do you expect to get
1 answer:
Total marbles : 33
W + G marbles : 11
Probability of picking either a W or G : 11/33
Number of W or G marbles = 11/33 × 45 = 15
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