Divide 3 groups first.
/ }& L& \" x( H: O8 b- hi.e. 4 x 4 x 4." x$ R# s" a( C2 X9 f; O
Weight any 2 groups [1st]" x* u# \! j* C0 p M
then you will know the heavier ball in which group.
7 Z D& a3 H/ f6 X1 c1 Etvb now,tvbnow,bttvbWeight any 2 balls in that group [2nd]tvb now,tvbnow,bttvb* c7 [) R A* n/ j: F, e# s: P0 c
then you will know the heavier ball in which 2 balls.. d) O1 j3 X. q9 r/ o
Repeat again in remainders [3rd]
8 l: Z+ l' q0 I! M9 t; V+ UGot the heavier ball. |
發表於 2009-7-2 12:48 PM
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