Which shape does not belong?


I saw this problem on a social network.  There are five answers to this question.  Four are more or less obvious.  The fifth one is enlightening.  Here is the analysis:

# Shape Size Color Frame
1 Square Large Red Yes
2 Square Large Red No
3 Circle Large Red Yes
4 Square Large Green Yes
5 Square Small Red Yes
  • #2 is different because it is the only one without a frame
  • #3 is different because it is the only circle
  • #4 is different because it is the only green shape
  • #5 is different because it has a different size

And, finally

  • #1 is different because it is the only shape that belongs to majority in all 4 categories.

So much for patterns and our ability to detect them.

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2 thoughts on “Which shape does not belong?

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