At a party, everyone shook hands with everybody else. If there were 66 handshakes, how many people were at they party?
At a party, everyone shook hands with everybody else. If there were 66 handshakes, how many people were at they party? Correct Answer 12
12C2 = 12 ×11 / 2 = 66 handshakes So, total number of people in the party were 12.
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Feb 20, 2025