first, compare 6 and another 6. they must have difference.
& ?# K3 r T0 G) S$ k4 r7 Msecond, divide those 6 heavier one into two, each has 3. u will find difference again.$ m0 @ q6 \( P, D% O9 \3 n# X/ k. C
third time, if u put 2 and they are equal, u will know the different one.
2 ^2 H- X! M$ S3 eso easy.... |