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Challenge 94


Northeastern churros seller

Difficulty level:

Which of the following presents a contradiction?

1) Every seller of churros is northeastern and some northeastern is not seller of churros.
2) No churros seller is northeastern and some churros seller is not northeastern.
3) Some churros seller is northeastern and some churros seller is not northeastern.
4) Every churros seller is not a northeastern and some northeastern is a churros seller.
5) Every northeastern is a churros seller and some churros seller is not a northeastern.