UMBC ebiquity
Twelve or thirteen?

Twelve or thirteen?

Tim Finin, 10:28am 4 February 2006

Are there 12 or 13 people in this picture?

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One Response to “Twelve or thirteen?”

  1. Tim Finin Says:

    If this is driving you crazy, see http://dqd.com/~mayoff/notes/extra-man-puzzle/