Correct Answer - Option 3 : Sunday
No. of days from 1 January 2017 to 31 December 2017 = 365 as 2017 is a non-leap year.
Since it was a Sunday on 1 January 2017, every 7th day from 1 January will be a Saturday.
Thus, 8th January, 15th January, etc. will be Sundays.
No. of odd days in 2017 = 1 = remainder obtained upon dividing 365 by 7
Therefore, the 364th day should be a Saturday.
365th day = 31 December 2017
Hence, the day of the week on 31 December 2017 is Sunday.
