AMC 8 2017 Problem 20
AMC8 2017 年第 20 题
概率★★★☆☆
An integer between 1000 and 9999, inclusive, is chosen at random. What is the probability that it is an odd integer whose digits are all distinct?
从 1000 到 9999 之间(包含 1000 和 9999)随机选择一个整数,问这个数是一个各个位上数字都不一样的奇数的概率是多少?
- A.
- B.
- C.
- D.
- E.
正确答案 · Correct Answer
B
解析 · Solution
解析整理中
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