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 1 z" i3 D, |% K/ z- V" m
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is it b??

roymak82

thanks

iii222

I think is C.
3 o; o' s( R; T+ U9 F, X) T6 {4 W3 jtvb now,tvbnow,bttvb公仔箱論壇9 n* k) h7 w: S1 x
Since A & B will have no way to know, and D did not know the answer.5.39.217.77% ^5 @) p& R" o% W% ^+ a

6 o9 _2 ?! m0 O8 w3 q& bThis is a tough question for grade 1.  tvb now,tvbnow,bttvb& o0 S5 N! E1 b9 Z: O5 H  |
公仔箱論壇( n) _3 [4 E. N5 [2 U
I most likely cannot answer it within 5 minutes when I was that young.
8 U, v+ F- j. U* u+ I9 T  k公仔箱論壇
5 y3 V& M; [" u5 z$ I4 O9 g3 Q5.39.217.77Wow, 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" ^_^
% w" v: i2 L: x7 D/ _5.39.217.775.39.217.779 F  `1 }& E- O% B
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則