Mathematics, 22.02.2020 01:43, freepao

You get into an elevator and go up 2 floors and down 8 floors before exiting. Then you get back onto the elevator and go up 4 floors before exiting on the 12th floor. What floor number were you on when you first got on? What floor number were you on the second time you got on?

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You get into an elevator and go up 2 floors and down 8 floors before exiting. Then you get back onto...