Level:
Project ID:
2010020101
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
An urn contains \(12\) red balls and \(30\) blue balls. Find the minimum number of red balls that must be added so that the probability of drawing a red ball is greater than \(0.66\).
\(47\)
\(27\)
\(37\)
\(17\)