Which of these was not a Washington-area professional sports team: the Maryland Arrows, the Capital Bullets, the Washington Tapers, the Washington Dash?
Answer: Washington Dash
Washington Post - The Maryland Arrows played box lacrosse in the Capital Centre in 1974 and 1975. For the 1973 season, the future Washington Bullets were known as the Capital Bullets. The Washington Tapers -- owned by a tape magnate -- competed in D.C. during the 1961 American Basketball Association season.