When it is 12 noon in Allahabad, the time in Tokyo would be about 3.30 PM. This is because Tokyo is ahead of Allahabad in terms of time.
Option 1: 9.30 AM - This option is incorrect because Tokyo is ahead of Allahabad in terms of time, so it would be later in the day in Tokyo, not earlier in the morning.
Option 2: 3.30 PM - This is the correct answer. As mentioned earlier, Tokyo is ahead of Allahabad in terms of time, so it would be afternoon in Tokyo when it is noon in Allahabad.
Option 3: 6.30 PM - This option is incorrect because 6.30 PM would be even later in the day in Tokyo than 3.30 PM.
Option 4: 9.30 PM - This option is incorrect because it would be too late in the day in Tokyo. Tokyo is usually about 5.5 hours ahead of Allahabad, so 9.30 PM would be past midnight in Tokyo.
Therefore, the correct answer is option 2: 3.30 PM.