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 8 n4 y: x! d# d
公仔箱論壇. J/ R1 I4 h% p" h5 I+ u' `7 G
is it b??

roymak82

thanks

iii222

I think is C.
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0 M+ ~/ U$ N0 D* a0 B公仔箱論壇Since A & B will have no way to know, and D did not know the answer.tvb now,tvbnow,bttvb! n/ \4 V4 M$ o5 F% Z
5.39.217.76% T" N/ |8 S7 U6 N$ P& Z
This is a tough question for grade 1.  
- z  \2 L7 K) H7 _. C3 n' k5.39.217.76公仔箱論壇" x2 d9 @8 w& \8 Z
I most likely cannot answer it within 5 minutes when I was that young.tvb now,tvbnow,bttvb$ j8 E. }! F; h; A6 `, q
7 a- \8 m' {. [! g
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" ^_^公仔箱論壇2 \$ d/ Y2 u9 u# @8 d$ N2 F: a
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偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則