gensy850711

first divide it into 3 groups... 4 for each group...4 |& S! p' r5 F$ }
den use 2 groups to test... if the weight is same... den throw away these 2 groups.. if not... use another 1 group to test with tat 2 groups... throw away the same weight groups...
, G4 e5 O- P) m/ U  @& i  N5.39.217.77:8898den... left 4 balls...
( {3 c$ H- A8 p3 |) l6 @tvb now,tvbnow,bttvbwhen u use tat 3 groups to test... u oredi know it is heavier or not...
1 X" v: n8 d4 H7 R) d8 o5 @tvb now,tvbnow,bttvbso when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...tvb now,tvbnow,bttvb' R) c: X5 X2 p. {) B- R
take the heavier or lighter 1... throw away tat 2 normal ball...
# ]8 {% j! t+ L" Sden u juz nit 2 test the last 2 balls...
. K* t( K$ D, a2 h5.39.217.77:8898same for now... take the heavier or lighter 1...