i think that will be 4
6 A7 V* e/ _0 u0 H/ T" r: @4 Yif you list all the number from 1 to 10公仔箱論壇+ |' R0 A, E0 D, X) W
seperate them into 3 groups
& ~& N! E. F/ R: s8 U2 }9 ?5.39.217.77from 1 to 4 has 2 numbers between them
; G0 A' A2 I$ [+ qfrom 4 to 7 has 2 numbers between them8 q/ f) Z2 N& _7 a, A# p
from 7 to 10 has 2 numbers between them
8 r. A0 P2 D- M$ E0 u6 J5.39.217.77so if you ask 1/3 of 10
5 ~" J) G1 A* E; N5 T' Otvb now,tvbnow,bttvbthat will be 4 |