The plurality applies to the subject or object. So if you are simply refering to multiple days, it would be "This project will take three days" day or days is the subject. If you are refering to something, to which the 3-days is an adjective, then the plural/singular will still apply to the main subject e.g. "This is a 3-day project" or "I have two 3-day projects back to back."
The plural of day is days. As in "the days are bright in the Summer".
The plural form of day is days.
The plural of "day" is "days."
The plural form for the noun day is days.
The noun 'days' is the plural form of the singular noun 'day'.
There is no plural form...... it really is the plural form for day, because it means every day.
The plural form is days. The plural possessive is days'.
The correct plural possessive form of "day" is "days'".
When no is a noun the plural is NOES. As in "The noes have won the day."
The plural of 'bunch' is bunches.The plural of 'ant' is ants.The plural of 'batch' is batches.The plural of 'day' is days.The plural of 'chimney' is chimneys.The plural of 'tomato' is tomatoes.The plural of 'umbrella' is umbrellas.The plural of 'donkey' is donkeys.The plural of 'sky' is skies.The plural of 'foot' is feet.The plural of 'show' is shows.
yes
The plural of daddy is daddies.