first, compare 6 and another 6. they must have difference.
/ f6 I" m, R/ v- g$ e& O; Fsecond, divide those 6 heavier one into two, each has 3. u will find difference again.
3 X4 y+ _$ B; `! F7 A* utvb now,tvbnow,bttvbthird time, if u put 2 and they are equal, u will know the different one.) q) L7 B5 X: C9 n& P2 L% `# B3 @
so easy.... |