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
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3 w8 d4 r. W/ i4 t# Q  p8 yos.tvboxnow.comis it b??

roymak82

thanks

iii222

I think is C.. ~2 R9 e* W# E# E+ C
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Since A & B will have no way to know, and D did not know the answer.
7 C5 L2 y* S6 y' tTVBNOW 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。公仔箱論壇! \- J& z1 E0 Y+ k; t% ~
This is a tough question for grade 1.  
% O7 ?  ~: x5 LTVBNOW 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。
3 p8 ~) O8 j2 q( g  C公仔箱論壇I most likely cannot answer it within 5 minutes when I was that young." O- ~$ p* c, `3 y/ w8 p

. {" A9 E  r* ~, y" r; m6 _- e/ ?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" ^_^' I! \; _% C7 r% g7 N
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偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則