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 . S6 M2 J5 Q+ \! i
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is it b??

roymak82

thanks

iii222

I think is C.
8 w9 O. L2 v2 j8 E5 A& `公仔箱論壇
! o/ h: O, b# s' }+ E( _* tos.tvboxnow.comSince A & B will have no way to know, and D did not know the answer.
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This is a tough question for grade 1.  
& N3 g% g# q; I' [9 h0 Aos.tvboxnow.com6 Y' u+ A0 ?* U8 Y6 r2 \
I most likely cannot answer it within 5 minutes when I was that young.os.tvboxnow.com& E' @* j" I9 P4 e9 L
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。9 u$ p# U1 U# Y0 O0 J/ y1 A
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" ^_^
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$ \5 ~) h, F  f9 l) {" J, ]偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則