Aptitude - Calendar - Discussion

In Years 100, 200, 300, 500, 600, 900, which are leap years? How can we define them?

2000 is a leap year.

700 is not leap year because 700 is divisible by 4 but 4 is not divisible by 2 that's why its no.

Which year has the same calendar as before and after 1700year?

Please tell me.

The years which are divisible by both 100 and 4 but not divisible by 400 are not leap year.

Hence 1700, 1300 are not leap year.

I am not understanding this, please anyone explain me in detail.

@All.

A year that is completely divisible by 4 is a leap year for eg.

1) 2004 ÷4= 501, Here Remainder is 0, hence 2004 is completely divisible by 4, & so the year 2004 was a leap year.

2) 2020÷4=505, Here Remainder is 0, hence 2020 is completely divisible by 4, & so the year 2020 was a leap year.

3) 2036÷4=509, Here Remainder is 0, hence 2036 is completely divisible by 4, & so the year 2036 will be a leap year.

But
2021÷4=505, Here Remainder is 1, hence 2021 is not completely divisible by 4, & so the year 2021 was not a leap year.

4) 1999÷4=499, Here Remainder is 3, hence 1999 is not completely divisible by 4, & so the year 1999 was not a leap year.

Conclusion: If the number is completely divisible by 4 then that year is a LEAP YEAR.

It is very helpful for solving a question. Thanks all.

All answers are leap years.

Dates before 1582-10-15 belong to the Julian calendar.
There the leap years are year decided by 4.
So, answers A to C is leap years.

=> Every year divisible by 4 is a leap year, if it is not a century.

=> Every 4th century is a leap year and no other century is a leap year.