Aptitude - Calendar - Discussion

Ans :-
Step 1 ; how many years we have between 2006 to 2010 = 2006 - 2010 =4.
Step 2 ; per year 365 so if we divide by weeks = 365/7 = 52.1 that means 52weeks 1ood days.
Step 3 ; So every 4th year we have an extra day that we call leap year means 366 days again if we divide by weeks = 366/7 = 52.2 in this 2 ood days we have.
Step 4; 2006 = 1.
For 2007 = 1.
For 2008 = 1.
For 2009 = 2 (1+1+1+2 = 5days).
Step 5;
1 jan 2006 = Sunday count 1 .
1 jan 2007 = Monday count 1.
1 jan 2008 = Tuesday count 1.
1 jan 2009 = Wednesday & Thursday count 2 because as per our count it is leap year(2days extra).
1 jan 2010 = answer is Friday.

How to find an leap year by seeing an year. Ex. 2006 is which year?is it leap year or ordinary year. If it is leap year how can we say it is leap year. If not how can we say not?

Good @Sundar.

Thanks @Sundar.

If a month has 31 days, Then we have 3 ODD DAYS.

If a month has 30 days, Then we have 2 ODD DAYS.

In 2007 -one odd day,
In 2008 -two odd days,
In 2009 -one odd day,
So 2010-(add 4 days to sunday).

ANS: Friday.

What was the day of the week 28 feb 1995?

Can anyone please explain?

In this question, we can apply formula.

f = k + (13 * m-1)/5+D D/4+C/4-2C.

A question was asked that how can you calculate a no of leap year in 100 years but answers provided does not give a clear solution to the question. Please, tell me how can I know that 100 is the beginning of the year? Thanks.

In 400 consecutive years, there are 97 leap years. Hence in 400 consecutive years, February has the 29th day 97 times. How was 97 leap year gotten?