i think that will be 4公仔箱論壇, Y4 f- Q7 r( }) I
if you list all the number from 1 to 10公仔箱論壇4 [4 K1 B6 l' N. f: M1 K
seperate them into 3 groups
1 s8 N" M; @9 v8 }( A) G* ofrom 1 to 4 has 2 numbers between them
& Z& `9 @5 d# s" z+ q2 ^# Q/ M8 ^from 4 to 7 has 2 numbers between them
1 d5 i% s$ l$ A% j$ M% f7 |tvb now,tvbnow,bttvbfrom 7 to 10 has 2 numbers between them8 B. q4 P$ H P% v) p
so if you ask 1/3 of 101 k; s' _$ u1 n" O# ?( Z& T
that will be 4 |