What is the sum of the repeating decimals of the form 0. [img]2022m10s/ct_ve0120

游客2025-02-23 33

问题 What is the sum of the repeating decimals of the form 0.

, where c and d are digits such that c＜d and c+d = 5?

选项 A、37/99
B、21/50
C、14/33
D、123/100
E、41/33

答案 C

解析循环小数化分数：多少位循环节，分母上就有几个9。故答案为C。

由于c＜d，c+d=5，故可能的取值为{0，5}，{1，4}，{2，3}，对应分数为5/99+14/99+23/99=42/99=14/33。

转载请注明原文地址:https://tihaiku.com/zcyy/3969685.html

相关试题推荐

随机试题

最新回复(0)

QuantityA:Cn2QuantityB:[img]2022m10s/ct_ve01203002j_egreqbj_0024_202211[/im