first divide it into 3 groups... 4 for each group...TVBNOW 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。% ^( N! F; J: x0 s
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...
" k% U* ^3 R6 U) [( y5.39.217.77:8898den... left 4 balls...
3 n9 y( f8 W$ F( ]* X, d5.39.217.77:8898when u use tat 3 groups to test... u oredi know it is heavier or not...5.39.217.77:8898% U3 m- F/ K, K1 j) z/ F: H/ Y5 ~
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1..., r5 ^4 q5 U6 x+ P
take the heavier or lighter 1... throw away tat 2 normal ball...
: ~: R; ]& ]0 W/ k, Q. v0 Xden u juz nit 2 test the last 2 balls...
. ]5 D/ |, J. C: dsame for now... take the heavier or lighter 1... |