Difficulty Level: Easy
Stats: 2,817 / 4,698 ( 59.96% ) 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