My health teacher had us act out this scenario. We all had cups with liquid, and we went around and exchanged/mixed liquids. This was to imitate sex during a party. Each person had a numbered cup and people recorded who they had 'sex' with during the assignment. There were three cups that resembled people with an STD. We do not know who they are, but everybody was affected by the STD by the end of it. My teacher then told us to figure out who the three people (by number of cup) were who had the STD to begin with. Here is the data. The people are numbered and each person recorded the number of the person they had sex with in order. Figure out which three people had the STD or at least the top five probable. (+ means they were affected and if it is blank that means they did not participate) Person 1 + 16 24 14 20 11 22 17 Person 2 + 13 Person 3 + 4 19 7 15 24 14 16 9 Person 4 + 3 7 19 11 24 Person 5 + 18 Person 6 Person 7 + 15 19 11 3 4 Person 8 Person 9 + 19 15 17 24 12 10 11 22 3 20 Person 10 + 9 Person 11 + 20 14 15 7 22 17 1 4 24 9 16 Person 12 + 22 9 17 Person 13 + 2 Person 14 + 11 22 1 16 24 3 17 19 Person 15 + 7 9 11 17 19 3 Person 16 + 1 24 20 14 22 17 3 11 Person 17 + 24 9 15 22 11 20 12 16 14 19 1 Person 18 + 5 Person 19 + 9 7 3 15 22 4 24 17 14 Person 20 + 11 16 1 17 24 9 Person 21 Person 22 + 14 12 11 17 19 16 1 9 24 Person 23 Person 24 + 17 1 16 9 3 14 19 11 20 4 22 There is also an attachment to a more organized spreadsheet I made. Everybody should have access as a viewer.