3. Xiaoming and Xiaohong live in the same building. Xiaohong lives on the 3rd floor, and Xiaoming lives on the 6th floor. Xiaoming says, "The number of steps I walk is twice that of Xiaohong." Is he right? Why?
3. Xiaohong lives on the 3rd floor, the number of stairs is 2 floors, Xiaoming lives on the 6th floor, the number of stairs is 5 floors, so Xiaoming says, I walk twice the number of stairs as Xiaohong, which is incorrect.