Multiple choice

A box contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is 2/3. The number of blue balls in the jar is:

  1. $13$
  2. $12$
  3. $16$
  4. $8$
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D Correct answer
Explanation

The probability of drawing a green marble is 2/3, so the probability of drawing a blue marble is 1 - 2/3 = 1/3. With 24 total marbles, the number of blue marbles is 24 * (1/3) = 8.

AI explanation

Using the classical definition of probability, the number of green marbles is (2/3) times 24, which equals 16. Since the box contains 24 marbles in total, the number of blue marbles is 24 minus 16. This gives the result as 8.

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