1. put 6 on each side of the scale to get the heavier side
* p9 x9 D6 h4 I: m2. take off any two balls from the more heavier side (among 6 balls) and put 2 on each side of the scale to weigh and get the heavier side(which are 2 balls) {if at this moment the scale is balanced, then weigh the 2 balls which we took out before} {if at this moment the scale is not balanced, then go 3}
6 N7 Z: Q/ L1 V( R$ ?- V8 J* k2 ]3. put one on each side to weigh and get the heavier one. |