Answer: 4 times.

來源: Blue_Diamond 於 2010-04-27 13:19:11 [] [舊帖] [給我悄悄話] 閱讀數 : (170 bytes)
本帖於 2010-04-30 08:35:18 時間, 由版主 於德利 編輯

But, in my analysis/calculation, by 4 times weighting, we can find an abnormal ping-pang ball from total 38 ping-pang balls.

Can you try to solve my new question?

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