take 4 balls as a group, 3 groups - A B C公仔箱論壇- b/ u' a6 b- f) y4 Z9 ?
weigh A & B (ex. B heavier)- j- V$ B* W1 \
then weigh B & C (B & C same weight)
B/ [9 G. f( c7 s, M* Z. ^tvb now,tvbnow,bttvbto find which group has the weight difference and find out is it (A is lighter)5.39.217.76& h8 Q. _8 m: x; G4 y
heavier or lighter
4 U7 H6 [( y9 `/ i" Tthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
, h7 B. o6 C/ `% i$ Bmeasure E vs F to find which 1 is lighter.... |