first, compare 6 and another 6. they must have difference. 1 _. F g& E) Z' i" u5 `! b
second, divide those 6 heavier one into two, each has 3. u will find difference again.5.39.217.77:88987 ^0 B9 E( g( ?7 Y% F7 |
third time, if u put 2 and they are equal, u will know the different one.
! N$ q9 O* S" d1 I/ f( S- dtvb now,tvbnow,bttvbso easy.... |