If 14 October 1988 was Friday, then what day was it on 14 February 1989?
Show answer & explanation
Correct answer: A
Explanation
October has 31 days. (31 - 14) = 17 days remaining.
November 1988: 30 days
December 1988: 31 days
January 1989: 31 days
February 1989: 14 days (up to the given date)
Total days = 17 + 30 + 31 + 31 + 14 = 123 days.
Calculation of Odd Days:
To determine the day of the week, we divide the total number of days by 7 and find the remainder (odd days):
123 ÷ 7
123 = (17 x 7) + 4
Here, the remainder is 4. This means that within these 123 days, there are 17 full weeks and 4 odd days.
Result:
Now, we will add 4 days to the day of the week corresponding to October 14, 1988 (Friday):
Friday + 1 = Saturday
Friday + 2 = Sunday
Friday + 3 = Monday
Friday + 4 = Tuesday
Therefore, February 14, 1989, was a Tuesday.
Correct Option: A) Tuesday