Social Distancing with Data Sufficiency Challenge! – Day 8

soccer ball on grass field during daytime

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This series is designed to help you step up your Data Sufficiency practice while we all spend a little extra time at home during the coronavirus situation; I’m going to publish one practice Data Sufficiency question each day! You can choose to do all of them, or none of them. 

Click on the tag “Social Distancing DS Challenge” at the bottom of this post to see all of the questions in this series! 

And remember to take whatever precautions you need to stay healthy over the next few weeks! 

Question #8

On a certain soccer team, one team member is to be chosen at random to play in the goalie position. What is the probability that a girl will be chosen?

(1) One-quarter of the team members are girls.

(2) 16 of the team members are boys.


Since 1/4 of the team members are girls, the probability of a girl being chosen would be 1/4. Thus, statement (1) is sufficient. Statement (2) is no good because we wouldn’t know the total number of teammates. Without that information, we can’t use the number of boys on the team alone to determine the probability. Statement (2) is NOT sufficient. The correct answer is (A).