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 $ @) J( G9 I5 C9 p) E: Z- m6 _
5.39.217.77:8898$ o9 {7 h1 l' n: r% y, R
is it b??

roymak82

thanks

iii222

I think is C.
2 I+ M- }: p' l3 X4 E8 ?1 ^& @4 D5.39.217.77:8898
4 v$ z0 S: }% m4 `Since A & B will have no way to know, and D did not know the answer.
- _# G& A- h9 z3 U9 c公仔箱論壇# }. E/ [9 ]" n) K
This is a tough question for grade 1.  
& z/ E9 y8 D* a4 W, t公仔箱論壇
, |4 `1 o) n& u* f3 u% e' {I most likely cannot answer it within 5 minutes when I was that young.) R9 @& P! U0 ^5 T
5 L: x7 ~: N6 v3 l2 |5 P0 y. y& [
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" ^_^
* c/ [2 t6 f7 l, v* X2 B7 Ptvb now,tvbnow,bttvb. T5 G( }- g4 G% g1 Q5 H
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則