
Contest open


Contest open
There are no restrictions on the subject matter, but your problem must be fully accessible to a 10-year-old child: the statement should be easy to understand, and it should be easy to start exploring, even without any prior experience. Beneath this apparent simplicity, however, there may lie beautiful ideas, or even some deep mathematics.
One entry per person. You may edit your problem until Friday at 23:00, Paris time. Admins select one winner and may also award honorable mentions. Translations of the same problem count as one entry.