QUES: 18th Street has a local subway station at the crossing with Seventh Avenue, served by the 1 2 trains on the IRT Broadway Seventh Avenue Line. There used to be an 18th Street station on the IRT Lexington Avenue Line at the crossing with Park Avenue South.

Which train line used to have an 18th Street Station at the crossing with Park Avenue South?
What is the answer?
ANS: IRT Lexington Avenue Line
QUES: Compass-M1 transmits in 3 bands: E2, E5B, and E6. In each frequency band two coherent sub-signals have been detected with a phase shift of 90 degrees (in quadrature). These signal components are further referred to as "I" and "Q". The "I" components have shorter codes and are likely to be intended for the open service. The "Q" components have much longer codes, are more interference resistive, and are probably intended for the restricted service. IQ modulation has been the method in both wired and wireless digital modulation since morsetting carrier signal 100 years ago.

What is the intended purpose of the "Q" component?
What is the answer?
ANS: probably intended for the restricted service
QUES: In 1952, following a referendum, Baden, Wurttemberg-Baden, and Wurttemberg-Hohenzollern merged into Baden-Wurttemberg. In 1957, the Saar Protectorate rejoined the Federal Republic as the Saarland. German reunification in 1990, in which the German Democratic Republic (East Germany) ascended into the Federal Republic, resulted in the addition of the re-established eastern states of Brandenburg, Mecklenburg-West Pomerania (in German Mecklenburg-Vorpommern), Saxony (Sachsen), Saxony-Anhalt (Sachsen-Anhalt), and Thuringia (Thuringen), as well as the reunification of West and East Berlin into Berlin and its establishment as a full and equal state. A regional referendum in 1996 to merge Berlin with surrounding Brandenburg as "Berlin-Brandenburg" failed to reach the necessary majority vote in Brandenburg, while a majority of Berliners voted in favour of the merger.

Which areas merged together in 1957?
What is the answer?
ANS:
unanswerable