- A10
- B15
- C20
- D12
Step-by-Step Solution
P(green) = , so and . Check: 15 green out of 20 balls gives 15/20 = 3/4.
Answer: B) 15
A bag contains 5 red balls and n green balls. One ball is drawn at random and the probability that it is green is 3/4. Find n.
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