AMC8 1998
AMC8 1998 · Q5
AMC8 1998 · Q5. It mainly tests Decimals.
Which of the following numbers is largest?
下列哪个数最大？
(A)
9.12344
9.12344
(B)
9.1234\overline{4}
9.1234\overline{4}
(C)
9.12\overline{34}
9.12\overline{34}
(D)
9.1234\overline{234}
9.1234\overline{234}
(E)
9.1234\overline{1234}
9.1234\overline{1234}
Answer
Correct choice: (B)
正确答案：（B）
Solution
Answer (B):
(A) $9.12344 = 9.12344000\ldots,$
(B) $9.12\overline{34} = 9.12344444\ldots,$
(C) $9.\overline{1234} = 9.12343434\ldots,$
(D) $9.1\overline{234} = 9.12342342\ldots,$
(E) $9.\overline{1234} = 9.12341234\ldots.$
答案（B）：
(A) $9.12344 = 9.12344000\ldots,$
(B) $9.12\overline{34} = 9.12344444\ldots,$
(C) $9.\overline{1234} = 9.12343434\ldots,$
(D) $9.1\overline{234} = 9.12342342\ldots,$
(E) $9.\overline{1234} = 9.12341234\ldots.$
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