AMC 8 1990 Problem 2
AMC8 1990 年第 2 题
百分比★☆☆☆☆
Which digit of 0.12345 , when changed to 9 , gives the largest number?
将 0.12345 中的哪一位数字改为 9 能得到最大的数？
- A.1
- B.2
- C.3
- D.4
- E.5
正确答案 · Correct Answer
A
解析 · Solution
Solution 1
Since 1 has the highest place value, changing it to 9 will result in the largest number.
Changing 1 to 9 results in a number greater than.9 while changing any other digit to 9 results in a number less than.2. Therefore, changing 1 results in the largest number.
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