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.
1 x* r3 w, Q+ p- O" K! J- `# K5.39.217.76TVBNOW 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。) @- H. ], ~- Y; z! K3 {7 l) a$ {
Since A & B will have no way to know, and D did not know the answer.公仔箱論壇7 c1 @) U* s+ f  N5 O' F

' m" t1 B2 @" X# F3 K: k0 ]. g5.39.217.76This is a tough question for grade 1.  
' \% h! J: x% n/ U$ iTVBNOW 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。公仔箱論壇( b5 }9 _9 _; N; l
I most likely cannot answer it within 5 minutes when I was that young.
5 _" v' k/ O9 X: L4 v3 O4 J5.39.217.76
$ f' j6 A1 d4 N! w  RWow, 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" ^_^
+ L# P6 o1 I/ V5.39.217.76tvb now,tvbnow,bttvb6 w7 e: W" w) V/ n0 f1 V# r
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則