simple logic

Logic Level 2

a man that lives on the 10th floor, is taking the elevator down to the first floor, 5 people are in this elevator that are also trying to exit to the first floor. Well on their way down they stop at the 7th, 4th, and 1st floor on the 7th floor 3 people get in, only 1 person is wanting to be on the first floor though, on 4th floor 2 people exit, and no one gets in, on the first floor 6 people get in, how many people are on the elevator?

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