Level:
Project ID:
2010020102
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
An urn contains \(19\) red balls and \(9\) blue balls. Find the minimum number of blue balls that must be added so that the probability of drawing a blue ball is greater than \(0.65\).
\(27\)
\(17\)
\(7\)
\(47\)