first divide it into 3 groups... 4 for each group...
5 E5 P+ _3 t8 d3 _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...tvb now,tvbnow,bttvb# q5 @1 V( k2 ?5 [% d& s4 a
den... left 4 balls...# w0 h: L, |% x5 T4 S" n
when u use tat 3 groups to test... u oredi know it is heavier or not...7 Z& S$ Y* N2 F+ S$ W/ ^
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
! V1 f, I+ q$ |! Ktvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...
$ C& z8 v5 e% t$ c5 M2 b% ^den u juz nit 2 test the last 2 balls...
2 G$ v( |4 o: A6 I( t& j, nwww3.tvboxnow.comsame for now... take the heavier or lighter 1... |