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Connect 4 Dots With 3 Straight Lines || Connect 9 Dots With 3 Straight Lines || Lateral Thinking - YouTube
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Puzzle | Connect 9 circles each arranged at center of a Matrix using 3 straight lines - GeeksforGeeks
There are 9 dots spaced out in square shape (3x3). How do you connect all the dots without lifting your pen and using 3 straight lines? - Quora
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