1/3 1/2 5/11 7/18 1/3

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 07:30:12
1/31/25/117/181/31/31/25/117/181/31/31/25/117/181/31/31/25/117/181/3=1/33/65/117/189/27=(2*1-1)/(1*1

1/3 1/2 5/11 7/18 1/3
1/3 1/2 5/11 7/18 1/3

1/3 1/2 5/11 7/18 1/3
1/3 1/2 5/11 7/18 1/3
=
1/3 3/6 5/11 7/18 9/27
=(2*1-1)/(1*1+2),(2*2-1)/(2*2+2),(2*3-1)/(3*3+2),(2*4-1)/(4*4+2),(2*5-1)/(5*5+2)
所以填(2*6-1)/(6*6+2)=11/38

1/3 3/6 5/11 7/18 9/27 (11/38)

1/3 3/6 5/11 7/18 9/27 11/(11+27)=11/38