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
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) v, q3 P$ q7 @; Nis it b??

roymak82

thanks

iii222

I think is C.
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Since A & B will have no way to know, and D did not know the answer.www2.tvboxnow.com9 Z7 b- L( w# v; B6 b

7 ?& S& z  e5 }! }2 d  P* Jwww2.tvboxnow.comThis is a tough question for grade 1.  
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0 C/ w* n' G7 M4 \9 l+ KTVBNOW 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。I most likely cannot answer it within 5 minutes when I was that young.TVBNOW 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。& o1 A8 Q  D3 b+ z. m0 n1 @4 M
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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" ^_^+ a/ ^$ G/ N4 y8 B( X
公仔箱論壇, ]" x4 E6 M" R
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則