Difficulty Level: Easy
Stats: 3,097 / 5,221
( 59.32% ) got this right
In a box, there are 21 red, 13 green and 8 blue balls. One ball is picked at random. What is the probability that it is neither red nor green?
- 1/6
- 4/21
- 1/4
- 1/2
- 17/21