Dr333

i think that will be 4) b$ A/ x0 q4 ]( ?/ y) V( A0 c
if you list all the number from 1 to 10
+ R; n' l& B: h6 ptvb now,tvbnow,bttvbseperate them into 3 groups
2 ^3 t- A- H0 n3 d2 R, A8 y公仔箱論壇from 1 to 4 has 2 numbers between them公仔箱論壇0 @- t4 n$ G1 {( k8 h7 |- n
from 4 to 7 has 2 numbers between them
& `3 x8 x3 g  K4 {8 K* Kfrom 7 to 10 has 2 numbers between them
7 ?% \# Z" b! O0 V+ i* stvb now,tvbnow,bttvbso if you ask 1/3 of 10" \1 {  m) W  X: r
that will be 4