Multiple choice general knowledge math & puzzles

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

  1. Sunday

  2. Monday

  3. Tuesday

  4. Friday
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using the calendar formula: 2000 years have 0 odd days. From 2001 to 2009, there are 2 leap years and 7 ordinary years (2*2 + 7*1 = 11 odd days). In 2010, days up to Aug 15: Jan(3), Feb(0), Mar(3), Apr(2), May(3), Jun(2), Jul(3), Aug(15). Total odd days = 11 + 31 = 42. 42 mod 7 = 0, which corresponds to Sunday.

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