Assume there are 20 people in a room, including you. You must shake hands with everyone else in the room. How many hands will you shake? If there are N (where N>0) people in the room, how many hands will you shake?

By Joseph Kistner 05 Nov 17:13
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Slides in Assume there are 20 people in a room, including you. You must shake hands with everyone else in the room. How many hands will you shake? If there are N (where N>0) people in the room, how many hands will you shake?

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