Riddle+02

=Riddle 02=

A riddle is a question where you have to think about the answer using logic (論理) or maths (数学) to solve it.

This is the second riddle:

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Instructions
If you think you know the answer, please email me at: yorksensei@gmail.com.
 * Don't forget your name and student number in the email!!!**

Scoring
If you get the answer correct, you will get 10XP.