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
# j2 Q1 o1 N) m; w* @5 c- w0 bTVBNOW 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。  ]( [* Q* G: \
is it b??

roymak82

thanks

iii222

I think is C.5.39.217.77:8898) J2 ^1 s2 o# `; C6 S6 F4 p( _
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Since A & B will have no way to know, and D did not know the answer.6 O1 c9 L: g* c! G- i6 s
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This is a tough question for grade 1.  
7 c* Z) x' `+ B, ^5 x' m3 b. xTVBNOW 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。
* g! c. }* K( F- j公仔箱論壇I most likely cannot answer it within 5 minutes when I was that young.tvb now,tvbnow,bttvb% F8 M; o% q" E6 d
% }0 F0 E5 E5 Y% U. U. T5 U/ {
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" ^_^3 D9 [+ p7 X/ x8 Y
公仔箱論壇, R: w5 ~' {, ^, L" u2 V
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則