I try by strict Math, the anwser should be between 78 and 81

來源: jinjing 於 2012-01-03 12:09:54 [] [舊帖] [給我悄悄話] 閱讀數 : (155 bytes)
回答: 有沒有好辦法？ 由 cma 於 2012-01-01 09:00:01

the back times are longer.Cs we have to use small number in the dinominatod the error is big. If the anwser is 81,we also can't use your formula....

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