Melancholia

Fermat’s Last Theorem (1x1)

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At Asung High, Yoon-soo’s new workplace, she gives a tricky question for students who want to join the math club. While no one in the class got the question right, a correct answer sheet is posted on the board outside the classroom. To find out who did it, Yoon-soo provokes them and manages to find who it is.