first divide it into 3 groups... 4 for each group...
) c* E# o' R9 K7 h4 R( L% u0 Eden 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...
* h- }) ? D; L* A( D+ C. M- N+ [tvb now,tvbnow,bttvbden... left 4 balls...5.39.217.76- G, U Q) X5 V8 X+ E
when u use tat 3 groups to test... u oredi know it is heavier or not...4 ~# ?0 a, E9 D: h E0 o5 v
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
- g1 E& F1 F( N% y2 ]# P/ w9 W V+ Atake the heavier or lighter 1... throw away tat 2 normal ball...
: ~6 R! B. z. R! Oden u juz nit 2 test the last 2 balls...
2 |, ]( x% j5 J2 K' y: w/ FTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。same for now... take the heavier or lighter 1... |