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
( |! ^) Q! N& M0 `5.39.217.77tvb now,tvbnow,bttvb- N* K  e" N. d; V  A
is it b??

roymak82

thanks

iii222

I think is C.
% ]( O: I  Z# U" C1 E' A
* z) B) [0 K3 S0 F+ a8 k5.39.217.77Since A & B will have no way to know, and D did not know the answer.tvb now,tvbnow,bttvb4 s! f8 u4 D/ e3 c" M- R
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。) X% J2 `2 T5 U- r7 q
This is a tough question for grade 1.  
1 F, c* s2 N  Q7 r  G' J5 c5.39.217.775.39.217.77" W! N7 K: B. @8 I( f5 o
I most likely cannot answer it within 5 minutes when I was that young.: N( V: K- O- {* i: y

& K& N8 K! v# A9 k" a, ?* N9 y  Mtvb 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" ^_^
6 e: [6 ~/ b- Y* f7 Xtvb now,tvbnow,bttvb
% L5 B$ G) r8 x$ Z* ^5 ~$ a, Q5.39.217.77偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則