Question

下列哪个数最大？

Which of the following numbers is largest?

$9.12344$

$9.123\overline{4}$

$9.12\overline{34}$

$9.1\overline{234}$

$9.\overline{1234}$

每个数都以 $9.1234$ 开头。下一位数字中，A 和 B 是 $4$ ，C 是 $3$ ，D 是 $2$ ，E 是 $1$ 。

A 之后停止并补零，而 B 后面继续出现 $4$ ，所以 B 最大。

所以正确答案是 B。

Each number starts with $9.1234$ . The next digits are $4$ for choices A and B , $3$ for C , $2$ for D , and $1$ for E .

Choice A then terminates as zeros, while choice B continues with more $4$ s, so choice B is largest.

Thus, the correct answer is B .