first divide it into 3 groups... 4 for each group...
( i% f1 s8 V/ C9 a: ]. u: Wden 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...os.tvboxnow.com: _3 ]& N9 J( ~9 a8 @ e) S
den... left 4 balls...
& z6 d/ \2 p) {- {公仔箱論壇when u use tat 3 groups to test... u oredi know it is heavier or not...tvb now,tvbnow,bttvb) Q3 B3 s% x, R) |+ k
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
! A! i2 b& }" o' stake the heavier or lighter 1... throw away tat 2 normal ball...
, d+ N% y2 k! s7 C! N/ h# K6 zTVBNOW 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。den u juz nit 2 test the last 2 balls...! F* ~* Z0 L) f" s, e2 w: j
same for now... take the heavier or lighter 1... |