i think that will be 4
% j7 ?, u J# X1 f2 _! ^7 `if you list all the number from 1 to 10
, i. c& f8 c4 }! h0 O3 W公仔箱論壇seperate them into 3 groupsTVBNOW 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。/ B+ k6 S* A# R4 y6 l
from 1 to 4 has 2 numbers between them
* `& q5 S/ j8 a! W/ R& a* vfrom 4 to 7 has 2 numbers between them公仔箱論壇" c) q8 I" W* D. V" r8 T
from 7 to 10 has 2 numbers between them
4 {2 W T, |9 [6 hso if you ask 1/3 of 10
8 Q$ M5 d2 U* R. e6 D; Kthat will be 4 |