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 os.tvboxnow.com% g* R+ e  ?5 @5 m7 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。1 @# B: @# z% k# G
is it b??

roymak82

thanks

iii222

I think is C.os.tvboxnow.com; l7 o) X8 i7 F; u

* y# a* n- e5 h& N! a: q  k. YSince A & B will have no way to know, and D did not know the answer.
# p( d8 O+ Q8 \4 ?os.tvboxnow.com& V/ K, B; S: n# B: ^$ F6 h
This is a tough question for grade 1.  
5 }/ A+ Z3 Z# o1 ?9 ITVBNOW 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% d( X& B6 y- g" L( M1 i
I most likely cannot answer it within 5 minutes when I was that young.
, s% v7 s, s. `5 \公仔箱論壇os.tvboxnow.com1 `6 j# q- @6 q) E: G+ Y
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" ^_^, F* F; _4 A. T4 l, `- j
' p8 D5 d& {) `5 a! F5 I
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則