During a flight from Delhi to Tokyo the following are the landing airports: I. Hong Kong II. Hanoi III. Taipei IV Bangkok The correct sequence of the landing at these airports during an onward journey is
- AI, II, III, IV
- BIV, II, I, IIICorrect
- CIII, IV, I, II
- DIV, i, ii, iii
Explanation
To solve this question, you need to look at the geographical location of these cities from west to east along the flight path from Delhi to Tokyo.
- Bangkok (Thailand) is the furthest west among these four cities.
- Hanoi (Vietnam) is located to the northeast of Bangkok.
- Hong Kong is located further east and slightly north of Hanoi.
- Taipei (Taiwan) is the furthest east, situated between Hong Kong and Tokyo.
Therefore, the correct west-to-east sequence is Bangkok, Hanoi, Hong Kong, and then Taipei. This corresponds to the order IV, II, I, III, making option B the correct answer.

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