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OpenStudy (anonymous):
A bag contains 10 red marbles, 15 yellow marbles and 5 green marbles. What is the probability of drawing a red or green marble from the bag?
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OpenStudy (anonymous):
1:2
OpenStudy (anonymous):
10+15+5 = 30 30 is 2 times 15 (10 + 5) 1(red or green):2(all marbles)
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