i think that will be 4公仔箱論壇! o- E8 d" b4 v2 J
if you list all the number from 1 to 10; O* _+ p% k' D, X9 r4 d
seperate them into 3 groups5.39.217.774 u' H6 A T1 ]/ \" d# f5 z" R) l/ D7 e
from 1 to 4 has 2 numbers between them5.39.217.77. f% s; v0 W6 c4 A' X* Q. G! Q
from 4 to 7 has 2 numbers between them
0 a7 N% U5 d4 f8 _* B1 Y& nfrom 7 to 10 has 2 numbers between themtvb now,tvbnow,bttvb3 f* g. q. A$ v( r7 ^
so if you ask 1/3 of 10tvb now,tvbnow,bttvb/ L6 m9 L7 ~7 b5 {4 T7 \
that will be 4 |