who can please complete the number patterns?

来源: 于 2007-05-14 07:19:08 [旧帖] [给我悄悄话] 本文已被阅读：次


1) 15, 20, ,45, 60
2) 150, 70, , 10, 0
3) 600, 120, , 10, 5
4) 10, 12, 9, 11, 6, , ,13, 10