Multiple choice

A bag contains 14 red marbles and 11 yellow marbles and 5 green marbles. One marble is drawn at random from the bag. Find the probability that it will not be a yellow marble.

  1. 0.37

  2. 0.58

  3. 0.63

  4. 0.70

  5. 0.79

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

Total marbles = 14+11+5 = 30. Yellow marbles = 11. Not yellow = 30-11 = 19. Probability = 19/30 = 0.6333.

AI explanation

The total number of marbles in the bag is 14 red plus 11 yellow plus 5 green, which equals 30 marbles. The number of marbles that are not yellow is 14 red plus 5 green, which equals 19 marbles. The probability of drawing a non-yellow marble is the number of non-yellow marbles divided by the total marbles, which is 19/30. Dividing 19 by 30 gives a decimal value of approximately 0.63.