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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is 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.
" t5 ^7 ]! q9 A  c公仔箱論壇' B& {/ d' b4 A9 N; @* |
This is a tough question for grade 1.  公仔箱論壇( X# \1 ]" s! T  c% E0 J8 H- o6 g
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I most likely cannot answer it within 5 minutes when I was that young.tvb now,tvbnow,bttvb' V2 h* M, M$ g" c' t

& P3 a! f6 |  |' PWow, 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" ^_^
. z, j1 u# F2 v; j8 [0 t5.39.217.77:88985.39.217.77:8898; o5 U$ k, ^3 G' |& Q
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則