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Tonight's math homework: Question 1: Xiaoming ranked 7th … Xiaohong ranked 19… How many of them are there?
Tonight's math homework: Question 1: Xiaoming ranked 7th … Xiaohong ranked 19… How many of them are there?

Analyze and answer:

From the 7th place to the 9th place, there are 19-7+1 = 1 3 people (+1was added because the first place was lost).

Therefore, after subtracting the first two people, there is 13-2= 1 1 person between them.