Dr333

i think that will be 4
% W- m, y+ Q( D( @if you list all the number from 1 to 10
" C* {% V4 @3 N9 n0 rtvb now,tvbnow,bttvbseperate them into 3 groups1 v7 m6 ~3 P" G
from 1 to 4 has 2 numbers between them
* u3 m% ]  M+ O* h  E( c5 Ttvb now,tvbnow,bttvbfrom 4 to 7 has 2 numbers between them公仔箱論壇2 i. B( Q& V7 Y  N: Y. S
from 7 to 10 has 2 numbers between them, z2 X  p9 e- B. d! p  V
so if you ask 1/3 of 10
- X+ y, r7 P0 A2 U8 g; qthat will be 4