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 , _) F$ l' {8 K

+ @' k: t5 U8 c4 L1 Dis it b??

roymak82

thanks

iii222

I think is C.' c) `3 A6 }( W/ d
5.39.217.776 e; r% c# f/ W5 _
Since A & B will have no way to know, and D did not know the answer.; m' b3 W# V! T) L. R  S- k2 G

' D7 z* ~' M, V3 N1 v' iThis is a tough question for grade 1.  
9 ?% O; a6 ?% Mtvb now,tvbnow,bttvb; H% i; _4 V: |% q
I most likely cannot answer it within 5 minutes when I was that young.
; k& z. b- z) `4 n5 n0 i/ etvb now,tvbnow,bttvb( B5 u. |6 B# o
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" ^_^
, P/ \( q* R' ^; O9 ^7 N# dtvb now,tvbnow,bttvb$ i) {- w& d2 j' j/ w8 q: ?- E
偵探型的數學題目 ^^

man0223

thanks for sharing

oftenpie

看不太懂規則