有一個樽，樽裡面有兩隻蝴蝶。假如每日蝴蝶以兩倍數(一隻變兩隻，第二天有四隻蝴蝶)繁殖，30天便把樽塞滿了，那麼要把樽塞到半滿要多少天？作者: b10005 時間: 2009-6-13 02:16 AM
有答案架...... 不過我level太低唔可以隱藏答案....... 我會send message俾答案你哋~~~作者: kelvingo935 時間: 2009-6-13 02:36 AM
29天咯...作者: b10005 時間: 2009-6-13 03:50 AM
3#kelvingo935 1 m+ I1 I- Q* D$ H9 ]% c+ b
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sent answer already作者: PeterCBWang 時間: 2009-6-26 03:09 AM
If the 29th days will be 50% of the bottle, 30th day will be full (50% x 2 = 100%).公仔箱論壇& d. A6 A0 q3 |9 D7 c4 C" w
Answer is 29 days! 0 X6 b' Y/ Q" t" h0 l+ Yplz answer作者: onlysherly 時間: 2009-6-26 12:36 PM
29天？？作者: b10005 時間: 2009-6-27 01:08 AM
sent answer to above all~~~作者: dicky1987 時間: 2009-7-1 04:10 PM
