问题
单项选择题
It each of the following fractions were written as a repeating decimal, which would have the longest sequence of different digits ?()
A.A
B.B
C.C
D.D
E.E
答案
参考答案:E
解析:
五个选项中的数都是无限循环小数,很明显和
的循环节只有一位;而
和
的循环节有两位,他们分别以0.18和0.41循环;
的循环节有三位,以0.612循环。