i think that will be 4公仔箱論壇5 i' [: x: k! o2 Q2 ?) ~1 e2 v
if you list all the number from 1 to 10tvb now,tvbnow,bttvb/ G) W. H# f- u" m
seperate them into 3 groups. ^, I2 `" c5 N5 h4 B- h, m% }
from 1 to 4 has 2 numbers between them公仔箱論壇0 R( Y$ x {: O: F3 F, u9 ]
from 4 to 7 has 2 numbers between them
, O! C) O3 q; j7 Atvb now,tvbnow,bttvbfrom 7 to 10 has 2 numbers between them公仔箱論壇. S! |1 B- Q% ?! j. ?1 N [: k/ V
so if you ask 1/3 of 101 i1 w( {/ m2 E- | M6 q
that will be 4 |