Q. If Amsterdam is X + 1, Montreal is X - 5, Tokyo is X + 9 and Lisbon is X, Which of the following is denoted by X?
Answer:
GMT
Notes: Greenwich Mean Time is the mean solar time at the Royal Observatory in Greenwich, London, reckoned from midnight. At different times in the past, it has been calculated in different ways, including being calculated from noon; as a consequence, it cannot be used to specify a precise time unless a context is given.