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
2 L8 Z+ ?4 L9 w3 w' T) m公仔箱論壇) i0 W& v7 t6 @8 ~5 ^( o' `
is it b??

roymak82

thanks

iii222

I think is C.
- J9 B5 H  x7 p1 i) m5.39.217.77:8898
3 u7 |  Y4 ~: r& Ctvb now,tvbnow,bttvbSince A & B will have no way to know, and D did not know the answer.
8 U$ P3 z9 `0 u" n4 C3 M公仔箱論壇6 o( R3 c% K. M8 L9 K
This is a tough question for grade 1.  
+ l9 Q0 P$ I/ Z9 T4 S! R1 p6 {' U5.39.217.77:8898
4 m3 B0 }: M( I6 H公仔箱論壇I most likely cannot answer it within 5 minutes when I was that young.公仔箱論壇) \  S0 h. X) v3 `! z

% V, o! N" i  d. q0 Q公仔箱論壇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" ^_^
6 j9 l; r; a+ X% L( L, \公仔箱論壇9 w8 j7 T: Q9 f. d3 I1 ?& D
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則