Multiple choice

A bag contains 10 black balls 5 red balls and 5 white balls and a ball is drawn randomly from it. what is the probability of getting either a red or a white ball.

  1. 1/4

  2. 1/2

  3. 3/4

  4. 1

  5. 4/5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total balls = 10 + 5 + 5 = 20. Red or white balls = 5 + 5 = 10. Probability = 10/20 = 1/2.

AI explanation

Using the addition rule of probability for mutually exclusive events, the probability of drawing either a red or a white ball is the sum of their individual probabilities. The total number of balls is 10 + 5 + 5 = 20. The probability of drawing a red or white ball is (5 + 5) / 20, which equals 10/20 or 1/2.

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