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 5.39.217.77! J3 F# _; l; m. {6 n& Z

  T+ ]+ X+ ?9 i9 s, i) m* h7 I5 s. Vis it b??

roymak82

thanks

iii222

I think is C.
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! u0 z% l* W0 p; N5.39.217.77Since A & B will have no way to know, and D did not know the answer.
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This is a tough question for grade 1.  公仔箱論壇+ f3 w6 g2 u6 @$ }5 @  ^' c/ i8 @( ~
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I most likely cannot answer it within 5 minutes when I was that young.
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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" ^_^
9 F- A6 }* n9 s5 M: h5.39.217.77
( u! ?) w. ?! m公仔箱論壇偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則