1 Answers
Option 1 : Wednesday
We know that:
In an ordinary year, there are 365 days and on dividing 365 by 7,
- We get remainder = 1 so this extra one day is taken as odd day.
Similarly, in an leap year, there are 366 days and on dividing 366 by 7,
- we get remainder = 2 so this extra two days is taken as odd days.
Thus, the remainder, which we get after dividing the number of days by 7 is considered as odd days.
Given Aamish's birthday on 25th February 2020 was a Tuesday.
As 2020 is a leap year number of days in month of February = 29 days
- Remaining days in February after 25th = 4 days.
- Number of days in month of March = 31 days.
- Number of days in month of April = 30 days.
- Number of days in month of May by 13th May 2020 = 13 days
Number of days from 25th February 2020 to 13th May 2020 = 4 + 31 + 30 + 13.
Number of days from 25th February 2020 to 13th May 2020 = 78
The number of odd days from 25th February 2020 to 13th May 2020 = 1 odd day.
∴ On 25th February 2020, it was a Tuesday + 1 = Wednesday
∴ Here, Aamish's brother's birthday, which was on 13th May 2020 is 'Wednesday'.
Hence, the correct answer is "Wednesday".