Dr333

i think that will be 4公仔箱論壇4 \; d1 ]+ I( G  S+ V: E5 T$ K
if you list all the number from 1 to 105.39.217.77- w3 }  {: T5 r/ D4 A4 h
seperate them into 3 groups" [+ o1 S# F2 t% G  B
from 1 to 4 has 2 numbers between them
. S1 p! w2 x' k1 F* n- h公仔箱論壇from 4 to 7 has 2 numbers between them
9 I/ _# @+ k" Kfrom 7 to 10 has 2 numbers between them
" S+ W4 j% z/ B3 k' a/ e: Z" T: bso if you ask 1/3 of 10  H/ [0 K/ k- p  B6 v& o6 ~/ @8 X+ S
that will be 4