Stupid Test Level 8 Question 2

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Here are the answers and walkthrough to Stupid Test Level 8 Question 2 – At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?


Hint

  • Let n-number of people, thus: n(n-1)/2=66. Therefore, n=12

Answer

  • 12

Stupid Test level 8-2

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