first, compare 6 and another 6. they must have difference. tvb now,tvbnow,bttvb6 j6 }% }2 S! Y; P# e* E' t) t' V
second, divide those 6 heavier one into two, each has 3. u will find difference again.
8 O' q; T! q8 R! e# v& g' J. E9 W4 Ztvb now,tvbnow,bttvbthird time, if u put 2 and they are equal, u will know the different one.公仔箱論壇8 }# L, y2 b$ C+ V
so easy.... |