first, compare 6 and another 6. they must have difference. ) d8 d$ |4 I' Y3 g
second, divide those 6 heavier one into two, each has 3. u will find difference again.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。( E: R: z, l/ S7 h& S, c& E
third time, if u put 2 and they are equal, u will know the different one.tvb now,tvbnow,bttvb* T1 _9 v& y3 p- H7 E
so easy.... |