问题 解答题
1-
1
10
-
1
100
-
1
1000
-
1
10000
=
答案

1-

1
10
-
1
100
-
1
1000
-
1
10000

=1-0.1-0.01-0.001-0.0001,

=1-(0.1+0.01+0.001+0.0001),

=1-0.1111,

=0.8889.

选择题
单项选择题 A3/A4型题