2024 AMC 10B 第 1 题

There are $1012$ people to the left of this person and $1009$ to the right

Add the two counts, but do not count this one person twice

There are $1012$ people to the left of this spot and $1009$ to the right. Add those two groups plus the person themselves: $1012 + 1009 + 1 = 2022.$ Or, just as fast, the two positions overlap on one person, so $1013 + 1010 - 1 = 2022.$ Thus, B is the correct answer.