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   N, h/ U$ m% O
公仔箱論壇5 R0 W- ~1 l( D+ }( p& D# f3 O# s' j
is it b??

roymak82

thanks

iii222

I think is C.2 h3 B! j. V5 F: E' w3 k
公仔箱論壇+ w+ H, e" H7 v% v, d' w
Since A & B will have no way to know, and D did not know the answer.
% c6 x" W3 ~% }  K$ i* }; R5.39.217.77:8898
: I& J) @+ \5 Wtvb now,tvbnow,bttvbThis is a tough question for grade 1.  
* s4 L7 A9 p3 C
+ ]  @# f) e% `8 L3 y7 T5.39.217.77:8898I most likely cannot answer it within 5 minutes when I was that young.
  J: j& n. x3 P3 C$ x% v公仔箱論壇! G1 w8 o0 k3 \
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" ^_^5.39.217.77:88985 i+ ]1 t# r% c) U$ q) K7 Z2 |

8 |( i3 V7 i" D* n, C# y' f公仔箱論壇偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則