366 days in a year
A normal year has 365 days; a leap year has 366 days.
366 in one leap year
A leap year will be 366 days instead of 365 days. One day is added. A more asccurate term than leap year is intercalary year.
Yes, if the year is divisible by 4 then it is usually a leap year. But a leap year is signified by a shortage of days, so the "every years" is a little inaccurate.
One
There are 365 days in an ordinary year and one extra, making 366 days, in a leap year.
In one year we have 365 days. While... In one leap year we have 366 days.
182.5 or 183 in a leap year
If only one of them is a leap year, then there are about 2556 days If two of them are leap years, then there are about 2557 days.
There are 365 days in one year, except on leap years, when there are 366 days.
639 days, or 640 days if one of the years is a leap year.
365 days are in a normal year, so you add 1 more day and you have 366 days in a year.