howardc888

Answer is C.  Many people already explained it.  :)

susu_nel

D应该先答对。D可以看见B,C是什么颜色，他就会有1/2机会答对

我是步惊云

interesting questions

kammandang

1# wasimasterQ . i7 x1 N' c- w- j$ K8 v- K
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is it b??

roymak82

thanks

iii222

I think is C.1 [% f" t) X. _  @4 |
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Since A & B will have no way to know, and D did not know the answer.公仔箱論壇, t) c$ u- J! {: }1 W
tvboxnow.com# L% N, v! h2 ~1 r  ^/ \! H
This is a tough question for grade 1.  
' O! d3 U) H' e公仔箱論壇* \8 {, j4 F7 L/ F
I most likely cannot answer it within 5 minutes when I was that young.; R6 k  q; l, N

  S' g6 t+ p- W$ M3 H. G' q# }* JTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。Wow, really enjoy this question.  Thank you for sharing.

mirrorabc

Thanks for sharing

GN2160659

thanks for sharing

greenland

answer pls...

wa929

thanks for good question

edwin_8888

thank for sharing

24456430

看不到图片，做不了题目

shijin

總覺得這類型的題目 都是在考驗"邏輯思考" ^_^
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, \& g" H9 Z  Ytvb now,tvbnow,bttvb偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則