Multiple choice

An urn contains 9 red, 7 white and 4 black balls. A ball is drawn at random. What is the probability that the ball drawn is red?

  1. 9/20

  2. 7/20

  3. 11/20

  4. 13/20

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total balls = 9 + 7 + 4 = 20. Red balls = 9. Probability = 9/20.

AI explanation

Using the classical definition of probability, the required probability is the number of red balls divided by the total number of balls. The total number of balls is 9 + 7 + 4 = 20. Therefore, the probability of drawing a red ball is 9/20.