MTTC 103 Elementary Practice

To determine the probability of pulling a yellow ball out of a jar containing fifty balls, it is essential to know how many yellow balls are actually in the jar. Probability is calculated as the ratio of favorable outcomes to the total outcomes. In this case, the favorable outcomes are represented by the number of yellow balls, while the total number of outcomes is the total number of balls in the jar, which is fifty.

Knowing the count of yellow balls directly provides the necessary numerator for the probability fraction. For example, if there are 10 yellow balls, the probability would be calculated as 10 (favorable outcomes) divided by 50 (total outcomes), giving a probability of 0.2 or 20%. Without this specific information about the number of yellow balls, the probability cannot be determined accurately.

The other options, while related to the context of the question, do not provide the necessary information to calculate the probability of pulling a yellow ball.