1、0.99无限循环=0.33无限循环 x 3
2、0.33无限循环=1/3
3、故0.99无限循环=1/3 x 3
4、因1/3 x 3=1
5、故0.99无限循环=0.33无限循环 x 3 =1/3 x 3=1
6、所以得出故0.99无限循环=1
1、0.99无限循环=0.33无限循环 x 3
2、0.33无限循环=1/3
3、故0.99无限循环=1/3 x 3
4、因1/3 x 3=1
5、故0.99无限循环=0.33无限循环 x 3 =1/3 x 3=1
6、所以得出故0.99无限循环=1