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1507

Q:

Everybody in a room shakes hands with everybody else. The total number of hand-shakes is 55. The total number of persons in the room is:

  • 1
    11
  • 2
    12
  • 3
    8
  • 4
    14
  • 5
    None of these
  • Show Answer
  • Workspace

Answer : 1. "11"

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