Answer: 4 times.

来源: Blue_Diamond 于 2010-04-27 13:19:11 [] [旧帖] [给我悄悄话] 阅读数 : (170 bytes)
本帖于 2010-04-30 08:35:18 时间, 由版主 于德利 编辑

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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