Mandir
The only day of the week which has a name in Judaism is the Shabbat, which is named in the Torah (Exodus ch.31). Other days are simply called so-and-so-many-days-after-Shabbat.
The holy day of the week is called 'Shabbat' in Judaism, it starts sundown Friday and ends sundown Saturday.
Both "what days of the week" and "which days of the week" are correct; however, "which days of the week" is typically used when the choices are limited, while "what days of the week" is more open-ended.
7 is an important number in Judaism representing wholeness and completeness - so it probably isn't coincidental that there are 7 archangels and 7 days (and 7 Noahide commandments etc.). Some orthodox churches link the archangels with days of the week, but there doesn't seem to be much of a reason behind that.
Seven days in a week is more generally used than seven days in the week, except if in reference to a specific week such as 'the seven days in the week' when referring to a specific week, such as the week before Christmas.
There are 7 days in a week and there is 4 weeks in a month
whorship the devil which is an abomination to GOD.
5 days is one work week, but there are 7 days in a week.
7 days in a week
7 days in a week?
There are seven days in a week.