44, find out which 4 have problem , (twice) and find out heavier or lighter 2 H1 ^1 a! e9 e" {, _' E2 wTVBNOW 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。4 divide by 2
then divide into three groups lor...4 balls in a group. the result should be same weight for two groups, diff weight for the third group. then weight those 4 balls individually, should be three balls got the same weight, the only one is diff!