take 4 balls as a group, 3 groups - A B C8 D: ^! U/ d0 F- J- B( j1 w% F; ]
weigh A & B (ex. B heavier)
" n- {, t+ p& ythen weigh B & C (B & C same weight)
; s. Z. ]: L6 k( `+ gto find which group has the weight difference and find out is it (A is lighter)% S7 e# R; A( [$ y) f7 i
heavier or lighter
0 q! q4 ~# U/ } y% Stvboxnow.comthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)tvb now,tvbnow,bttvb; S5 G; {9 _0 b
measure E vs F to find which 1 is lighter.... |