用1角、2角、4角、1元、2元、4元的邮票各一枚,一共可以组成63种邮资.
0.10.20.30.40.50.60.71
1.11.21.31.41.51.61.72
2.12.22.32.42.52.62.73
3.13.23.33.43.53.63.74
4.14.24.34.44.54.64.75
5.15.25.35.45.55.65.76
6.16.26.36.46.56.66.77
7.17.27.37.47.57.67.7