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1. Remove 12 toothpicks and make two congruent squares.
2.Remove four toothpicks leaving one large and four small
squares.
3. Remove four, six, or eight toothpicks leaving five unit
squares.
4. Remove eight toothpicks leaving four unit squares.
5. Remove six toothpicks leaving three squares.
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6. Remove eight toothpicks leaving five squares.
7. Remove eight toothpicks leaving two squares.
8. Remove four toothpicks leaving three squares.
9. Remove four toothpicks leaving nine squares.
10. Remove six toothpicks leaving two squares and two congruent irregular
hexagons.
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