If 18 January 2013 was Friday, then what was the day of the week on 19 December 2021?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Sunday.
2013 to 2021 = 8 Years (6 Ordinary Years and 2 Leap Years)
Total odd days = 4 + 6 = 10 ÷ 7 = 1 week and 3 odd days
Then, 18 January 2021 will be Friday + 3 = Monday
Now, the number of days between 18 January 2021 to 19 December 2021 = 13 (January) + 28 (February) + 31(March) + 30(April) + 31(May) + 30(June) + 31(July) + 31(August) + 30(September) + 31 (October) + 30(November) + 19(December) = 335 days ÷ 7 = 47 weeks and 6 odd days
Thus, 19 December 2021 will be Monday + 6 = Sunday