First in 4 group each 3 balls.(A, B, C, D )
' `2 ]+ W( }2 s: ]6 H8 `answert1)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.
+ c- I8 i H5 c% I3 G2 Manswert2)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.
2 o: D5 @- X$ o) l* t. i/ |+ l/ ianswert 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." ]. ^+ n5 X2 E6 n! Y
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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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