There is 12 balls.. divide them into piles of 4www3.tvboxnow.com6 }" A) d, Q) h" M6 z8 x+ t
so 3 groups for 4..name is A,B,Ctvb now,tvbnow,bttvb9 x! E9 j( N+ f; ~) w
case 1:
! E) o7 M; M' F$ A/ I# Zmeasure A -- B
: V5 L1 B n1 b3 K5 E" G* D9 Ltvb now,tvbnow,bttvbA or B is heavier
* K. s I, N8 @; Q7 G# Jdivide that group into 2 by 2: a, @# h1 c+ t8 X3 V; J
then divide heavier group into 1 by 1公仔箱論壇3 h4 }8 i! z" Q$ _9 `4 S
7 s4 N* F3 ~ y9 L' Ctvb now,tvbnow,bttvbcase 2:
8 q* i) \: M( ?& XA and B is the same.. therefore C has the heavier ball公仔箱論壇' t# F- D' ]' [, @5 P. j+ M
divide C into 2 by 2
: s) r I- K6 W) `) G6 t. ]$ ntvb now,tvbnow,bttvbthen divide heavier group into 1 by 1..
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, b$ h6 ^7 k3 S7 L& T' L W6 s公仔箱論壇got it in 30 seconds.. not so hard -.-' |
發表於 2006-12-8 01:06 PM
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