等量代换已知:△+○=24,○=△+△+△,求△=?○=?
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找出下面各数列的规律,并填空. (1)1,2,3,4,5,□,□,8,9,10. (2)1,3,5,7,9,□,□,15,17,19. (3)2,4,6,8,10,□,□,16,18,20. (4)1,4,7,10,□,□,19,22,25. (5) 5,10,15,20,□,□,35,40,45.