i think that will be 4公仔箱論壇4 ]4 c* Y8 o% O9 d
if you list all the number from 1 to 10. n, `8 l* M, j& \4 l9 ~; M; R* L% X7 ?
seperate them into 3 groups公仔箱論壇/ X. v9 \: P: D( c* {
from 1 to 4 has 2 numbers between them
7 Z8 F# V' }% o8 n; D" i+ Zfrom 4 to 7 has 2 numbers between them5.39.217.776 R/ r: s3 \: P
from 7 to 10 has 2 numbers between them
1 ?$ f0 g- \! J$ _% h# b" Hso if you ask 1/3 of 10
# V1 s$ s; o5 Z3 b& H5.39.217.77that will be 4 |