The last day of the century cannot be Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. explain how

The last day of the century cannot be Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. explain how

Answer :
Given :the last day of the century cannot be Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday

Total days in 100 years = 365*100 +10+10+5 = 365525 { we added 10, 10, 5 due to no. of hours in a day is 4 minutes less than 24 hours.)

now to find the day = 365525 mod 7 =6

therefore if 1st day was sunday than last day would be saturday and so on !!