Sohan’s birthday falls on 7th September. In 1992 he celebrated it on a Monday. On which day of the week will he celebrate his birthday in 2012?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Friday
A date moves 1 day forward after each ordinary year and 2 days forward after a year that contains a 29th February.
From 7 September 1992 to 7 September 2012 there are 20 years
29th February comes in between in 1996, 2000, 2004, 2008 and 2012, so 5 extra days (2000 is a leap year because it is divisible by 400)
Odd days \(=20+5=25=3\times7+4\), that is 4 odd days
Monday + 4 days = Friday