1) 15, 20, ,45, 60
2) 150, 70, , 10, 0
3) 600, 120, , 10, 5
4) 10, 12, 9, 11, 6, , ,13, 10
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(2)和(3)的答案都是30,其他的还没看出来。
-π-
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05/14/2007 postreply
08:35:35
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(1) 30
-yahoocc-
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05/14/2007 postreply
20:33:25
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