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Handshake Puzzle
Solve the Handshake Puzzle here on this page.
At a party, everyone shook hands with everybody else. There were 66 handshakes.
How many people were at the party?


Solution
Solution:
If there are n people,
- The first person will shake hands with an n-1 person,
- The second with n-2,
- The third with n-3, and
- The (n-1)th person with n-(n-1)=1 person means the last person.
Hence, total handshakes are (n-1)+(n-2)+(n-3)+….+3+2+1
Which can be equated using n(n-1)/2=66
Hence, n=12





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- Ages of the daughters Answer
- Rectangular Cake Puzzle Answer
- Truth and Lie Puzzle Answer
- Aircraft Puzzle AnswerHorse
- Ratio of Boys and Girls Answer
- Blind Games Answer
- Chaos in the Bus Answer
- Birthday Puzzle Answer
- Measuring 7 litres Answer
- Bulb in the Next Room Answer
- Arranging 10 coconuts Answer
- Married or Unmarried Answer
- Gold Bar Puzzle Answer
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