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Operation problem: In order to celebrate Children's Day, the children designed a digital puzzle. Do you know the meaning of each word?
Section 6 (3)-(5) Children (7) Children (8) (6)
Kuai () Le () If kuai is 1, Le is 5. If it's almost 2, music is 6. If it's almost 3, music is 7. If it's almost 4, music is 8. In short, music = fast +4.