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 tvb now,tvbnow,bttvb+ `: V$ r/ x& s* O! M0 R  a
5.39.217.77:8898) u: o0 v& g9 q
is it b??

roymak82

thanks

iii222

I think is C.$ K! e! s' i6 z# A. \( t: R8 U
) l9 @6 z* b" J, a: N/ J( d
Since A & B will have no way to know, and D did not know the answer.* [5 G. _" p% g9 C6 g; F7 r
1 `" _& z3 f+ y2 ^" N. O0 x
This is a tough question for grade 1.  
- T: o7 `3 ?* E) e( k公仔箱論壇
7 q' b; N6 o/ F$ ]% }I most likely cannot answer it within 5 minutes when I was that young.
% M3 x, q7 @' Z" ]) s! ~TVBNOW 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。
" l) O; N' ?& N2 j0 _( l7 ctvb now,tvbnow,bttvbWow, 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" ^_^% v- p% X& j) i
  ], q* m; V% b& H3 |* P
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則