First in 4 group each 3 balls.(A, B, C, D )
9 v. \& `+ T. e/ i$ c5.39.217.77answert1)A and B 去稱, 如果重量相等. than A and C去稱,如果重量相等. D 份3個.D1 and D2去稱, 如果重量相等. D3重量異常.
5 o' x4 t b( t% Z# b公仔箱論壇answert2)A and B去稱, 如果重量不相等. than A and C去稱,如果重量相等.B 份3個.B1 and B2去稱,如果重量相等. B3重量異常.6 G& Y- ^+ \$ f$ N0 C* k
answert 3)A and B去稱, 如果重量不相等. than A and C去稱, 如果重量不相等. A 份3個. A1 and A2去稱,如果重量不相等.之前 you know the different by A , B and C 重或輕.tvb now,tvbnow,bttvb4 U: v K2 a6 N a7 M& t
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