first, compare 6 and another 6. they must have difference. # z8 a5 h! R; Y' w, W9 _; ]
second, divide those 6 heavier one into two, each has 3. u will find difference again.
& a- d8 w" c4 U, Y# Mtvb now,tvbnow,bttvbthird time, if u put 2 and they are equal, u will know the different one.
# i: o2 h' E2 W, n U ^5.39.217.77so easy.... |