From a box containing 2 red, 6 white and 5 black balls, a ball is…

Mathematics WAEC 1995

From a box containing 2 red, 6 white and 5 black balls, a ball is randomly selected. What is the probability that the selected ball is black?

  • 2/13
  • 5/13 checkmark
  • 5/11
  • 5/6
  • 11/13

The correct answer is: B

Explanation

2r, 6w, 5b balls
Total balls = 2 + 6 + 5 = 13 balls p(black) = 5/13
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