比较简单啊:
1/3:0.333
1/5:0.2
2/5:0.4
14/25: 0.56
5/7: 0.714
13/21: 0.619
1,0.333
2,0.2
3,0.4
4,0.56
5,0.714
6,0.619
1/3=0.333
1/5=0.2
2/5=0.4
14/25=0.56
5/7≈0.714
13/21≈0.619
0.333 0.2 0.4 0.56 0.714 0.619
1,0.333~~~~~
2,0.2
3,0.4
4,0.56
5,0.714
6,0.619