i think that will be 4
; K5 I) F0 @7 u( A- iif you list all the number from 1 to 10公仔箱論壇; c1 Y9 a1 x, c1 p
seperate them into 3 groupstvb now,tvbnow,bttvb1 k% y# h1 L' m" s7 V
from 1 to 4 has 2 numbers between them公仔箱論壇. c! V: F" F& d' m, `/ |
from 4 to 7 has 2 numbers between them) a8 h( `4 K' k. F2 j
from 7 to 10 has 2 numbers between them1 j3 ]$ n# D+ n r
so if you ask 1/3 of 10tvb now,tvbnow,bttvb3 k7 a/ Y0 y% h
that will be 4 |