Divide 3 groups first.公仔箱論壇$ ?4 H7 l; J( H- S! [% B
i.e. 4 x 4 x 4.) W* S9 C- p' N% K
Weight any 2 groups [1st]
- S6 T; V) h i" K4 nthen you will know the heavier ball in which group.* Q% S6 n1 e. E0 ]8 w* A( ]6 y
Weight any 2 balls in that group [2nd]os.tvboxnow.com4 B a6 c7 N% J5 Z* o$ U
then you will know the heavier ball in which 2 balls.1 N# i7 n. `6 s" L! I2 S/ @( Q
Repeat again in remainders [3rd]
! `% K. b# l3 N7 }) r3 b公仔箱論壇Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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