i think that will be 4& \: p" ^6 H* x4 b& z, l8 y
if you list all the number from 1 to 10. W% U# B' c! g& t' {1 y/ i( `
seperate them into 3 groups
m) o2 M7 i/ h$ l0 nfrom 1 to 4 has 2 numbers between themtvb now,tvbnow,bttvb( a F2 u3 u' `$ X7 t" D
from 4 to 7 has 2 numbers between them
$ U |: B) x* M4 ETVBNOW 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。from 7 to 10 has 2 numbers between themtvb now,tvbnow,bttvb3 r0 ^) |8 D2 A+ F n R# p9 o
so if you ask 1/3 of 10
( r3 y% {% O5 O7 P! itvb now,tvbnow,bttvbthat will be 4 |