<prompt> Rank the following presidents by the number of years they held office in the USGeorge Washington, Ronald Reagan, Barack Obama  <response>: From longest to shortest serving among the three presidents you provided, the order would be: 1. George Washington 1789 1797 served for 8 years.2. Ronald Reagan 1981 1989 served for 8 years.3. Barack Obama 2009 2017 served for 8 years.All three presidents served for two full terms 8 years each. 