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BEBRAS 2025 Grade 5-6 Round 2 Ext Question 14

BEBRAS · BEBRAS 2025 Grade 5-6 Round 2 Ext

Question 14

SuperBeaver’s scrolling background is a sequence of six tiles. The computer repeatedly appends a new tile on the right while deleting the leftmost tile.

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To choose the next tile, it follows an appropriate arrow from the preceding tile in this transition diagram.

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“Phông nền” means “Background”; “Sơ đồ” means “Diagram”. Which sequence cannot be a SuperBeaver background?
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