100 days after a sunday will be a day

a Sunday
b Tuesday
c thursday
d monday

sunday + 7 n = sundaay

100/7 = 14.2857 = 14 + 2/7
so
sunday + 14 weeks + 2 days = Tuesday :)

To determine the day of the week that is 100 days after a Sunday, you can use the concept of modular arithmetic.

There are seven days in a week, so we can consider the days as numbers from 0 to 6, where 0 represents Sunday, 1 represents Monday, and so on.

To find the day that is 100 days after a Sunday, you need to calculate the remainder when 100 is divided by 7. This remainder will give you the number of days after Sunday.

100 mod 7 = 2

Therefore, the day that is 100 days after a Sunday would be two days after Sunday.

Since Sunday is day 0, two days after Sunday is day 2, which corresponds to Tuesday.

So, the answer is b) Tuesday.