Question

注诇 讚祝 诇讘谉 爪讬讬专讜 诪砖讜砖讛 拽诪讜专 讜诪讞讜诪砖 拽诪讜专. 诪讛讜 讛诪住驻专 讛讙讚讜诇 讘讬讜转专 砖诇 讞诇拽讬诐 砖讗诇讬讛诐 讛拽讜讜讬诐
讘爪讬讜专 讬讻讜诇讬诐 诇讞诇拽 讗转 讛讚祝?

Difficulty level (1 very easy - 10 very hard): 2

Topics:
Combinatorics -> Combinatorial Geometry Geometry -> Plane Geometry
Sources:
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