take 4 balls as a group, 3 groups - A B C
1 \# k% J, X! p: A, n: |weigh A & B (ex. B heavier)5.39.217.77, @( N' H2 y, c% S4 l+ S
then weigh B & C (B & C same weight)
( j0 x" k7 a4 w+ Hto find which group has the weight difference and find out is it (A is lighter)
: U; k% q) c/ R4 f3 C b1 oheavier or lighter. N+ e+ H5 V! z, G
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
3 Q$ R* Z& r' _- W2 x! X: @5.39.217.77measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
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