Question

please solve it....​

Answer 1

Answer: Monday

Step-by-step explanation:

Knowing that December 25, 2020 was a Friday; 2020 was a leap year, and leap years come every four years, the problem is solvable without a calendar. Since 365/7=52r1, each regular year that passes, a date shifts one day later (e.g. between 2020 and 2021, December 25 would shift from Friday to Saturday). Though also, 366/7=52r2, so when a leap year passes, a date shifts two days later (e.g. between 2019 and 2020 December 25 would shift from Wednesday to Friday). Between 1995 and 2020, there are 7 leap years (1996, 2000, 2004, 2008, 2012, 2016, and 2020). Since there are 25 years between 1995 and 2020 (2020-1995=25) and 7 leap years, add 25 and 7 to account for the number of days December 25th has shifted between 1995 and 2020.

25+7=32

Divide 32 by 7:

32/7=4r4

Thus, December 25, 1995 is four days in the week before Friday: Monday.