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

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BTGmoderatorLU: Moderator; Posts: 2320; Joined: Sun Oct 15, 2017 1:50 pm; Followed by:6 members

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

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

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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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