Which date of June 2099 among the following is Sunday?
Which date of June 2099 among the following is Sunday?
4
5
6
7
Solution
Taking 5th June 2022 (the exam day) as a Sunday reference, the gap to 2099 is 77 years containing 19 leap years and 58 ordinary years, giving odd days = (58 x 1) + (19 x 2) = 96, and 96 mod 7 = 5. So 5th June 2099 is Sunday + 5 = Friday, making 7th June 2099 a Sunday.