i think that will be 4公仔箱論壇" {, x$ |: L( a6 {$ Q& i
if you list all the number from 1 to 10公仔箱論壇" Y, B a. d# \
seperate them into 3 groups" H7 G6 F! o+ [; a
from 1 to 4 has 2 numbers between them
4 ]. l1 g6 z! J8 s* cfrom 4 to 7 has 2 numbers between them
' J; E- [# U, h- v- t+ pfrom 7 to 10 has 2 numbers between them
- p; c8 [9 j6 t4 P2 G) Rso if you ask 1/3 of 10
5 b2 F1 V5 V9 T: D: }that will be 4 |