A bag has 15 red, green, and blue balls. The number of each color ball is different. The difference between the number of red balls and green balls is...
Question
A bag has 15 red, green, and blue balls. The number of each color ball is different. The difference between the number of red balls and green balls is the same as the difference between the number of green balls and blue balls. The probability of selecting one blue ball from the bag is greater than 0.2. Which of the following can be the number of blue balls in the bag?
Options:
(A) 3
(B) 4
(C) 5
(D) 7
(E) 9