Question

What will be the day of the week 15th August, 2010?

• A. Sunday
• B. Monday
• C. Tuesday
• D. Friday

Answer 1

The correct option is A Sunday

15th August, 2010 = (2009 years + Period 1.1.2010 to 15.8.2010)
Odd days in 1600 years = 0
Odd days in 400 years = 0
9 years = (2 leap years + 7 ordinary years) = (2 x 2 + 7 x 1) = 11 odd days 4 odd days.
Jan. Feb. March April May June July Aug.
(31+28+31+30+31+30+31+15) = 227 days.
$\displaystyle \therefore $ 227 days = (32 weeks + 3 days) 3 odd days.
Total number of odd days = (0 + 0 + 4 + 3) = 7 $\equiv$ 0 odd days.
Given day is Sunday.