A group of students were surveyed to see how many used product A, product B, or product C. The following is a Venn diagram showing the results of the survey: How many students surveyed use only product C?
A)41
B)20
C)35
D)32

Question

A group of students were surveyed to see how many used product A, product B, or product C. The following is a Venn diagram showing the results of the survey:  How many students surveyed use only product C?
A)41 
B)20 
C)35 
D)32

Quizplus · Accepted Answer

Only the students in the intersection of circles A and C and the students in the intersection of circles B and C use more than one product. Therefore, the students who use only product C are represented by the circle labeled C but outside of the intersection with the other two circles. Counting the number of students in this area, we get 20.

A Group of Students Were Surveyed to See How Many