First in 4 group each 3 balls.(A, B, C, D )
) d1 E: M7 `- sanswert1)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.: N% E; P( @5 w/ w; C0 B4 h
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.
( e8 ?, L4 M- x0 H; p$ K% M5.39.217.77answert 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.# R; I, x$ K8 s1 S
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發表於 2007-12-1 03:18 PM
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發表於 2007-12-2 01:42 PM
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