take 4 balls as a group, 3 groups - A B C
& \0 H" @! L4 Tweigh A & B (ex. B heavier)
9 O! o% |5 j9 q- H6 O- E9 Ithen weigh B & C (B & C same weight)
$ a& @6 o$ T! f$ Dto find which group has the weight difference and find out is it (A is lighter)
Z3 r6 P7 ~* w7 `3 `! M0 Mheavier or lighter: w5 D$ `. U5 _1 _
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
2 i* @% E% s& X% c {measure E vs F to find which 1 is lighter.... |