What was the day of the week on 28th February 1995?a) ...
1600 years contain 0 odd day.
300 years contain 1 odd day.
94 years = (23 leap years + 71 ordinary years)
= (46 + 71) odd days
= 117 odd days, i.e., 5 odd days
Days from 1st January 1995 to 28th February 1995
= (31 + 28) days = 59 days
= (8 weeks + 3 days) = 3 odd days
∴ Total number of odd days
= (0 + 1 + 5 + 3) = 9 odd days i.e., 2 odd days.
So, the required day is Tuesday.
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What was the day of the week on 28th February 1995?a) ...
Solution:
To find out the day of the week on 28th February 1995, we need to use the concept of the Gregorian calendar.
Gregorian Calendar:
The Gregorian calendar is a solar calendar that was introduced by Pope Gregory XIII in October 1582. It is used as the international standard for civil purposes. The calendar consists of 365 days in a common year and 366 days in a leap year. The leap year occurs every four years, except for years that are divisible by 100 but not divisible by 400.
Steps to Find the Day of the Week:
To find the day of the week on 28th February 1995, we can use the following steps:
Step 1: Find the number of days between the known date (e.g., 1st January 1900) and the given date (28th February 1995).
Number of days between 1st January 1900 and 28th February 1995 = 35,914
Step 2: Divide the total number of days by 7.
35,914 ÷ 7 = 5,130 R 4
Step 3: The remainder (4) corresponds to the number of days after the last multiple of 7.
Step 4: Add the remainder to the day of the week of the last multiple of 7 (which was a Tuesday).
Tuesday + 4 days = Saturday
Therefore, 28th February 1995 was a Saturday.
Answer: (a) Tuesday
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