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If a barrel contains only red and white balls, how many red balls are in the barrel?

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by BTGmoderatorLU » Fri Dec 06, 2024 4:24 am

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A

B

C

D

E

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If a barrel contains only red and white balls, how many red balls are in the barrel?

1. The probability of pulling out a red ball with one random selection is \(2/7\)

2. The probability of pulling out a white ball with one random selection is \(5/7\)

The OA is E
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Source: — Data Sufficiency |