Correct Answer - Option 4 : 30 October 2019
Given:
7 November 2019 = Thursday
The above given dates will not be Thursday only if the difference between the number of days between 7 November and the given date must not be a multiple of 7.
On checking each options one by one:
1) 28 November 2019 → 28 November - 7 November = 21 days. It is a multiple of 7. So, It will be Thursday.
2) 5 December 2019 → 5 December - 7 November = 35 days. It is a multiple of 7. So, It will be Thursday.
3) 14 November 2019 → 14 November - 7 November = 7 days. It is a multiple of 7. So, It will be Thursday.
4) 30 October → 7 November - 30 October = 9 days. It is not a multiple of 7. So, it will not be Thursday.
Hence, "30 October 2019" is the correct answer.
