AMC 8 1999 Problem 1
AMC8 1999 年第 1 题
表达式与运算★☆☆☆☆
(6?3) + 4 - (2 - 1) = 5. To make this statement true, the question mark between the 6 and the 3 should be replaced by
要使等式 (6?3) + 4 - (2 - 1) = 5 成立，6 和 3 之间的问号应替换为
- A.
- B.
- C.+
- D.-
- E.None of these / 以上都不对
正确答案 · Correct Answer
A
解析 · Solution
Solution 1
Simplifying the given expression, we get: (6?3)=2.
At this point, it becomes clear that it should be .
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