Which one is correct?
"4 days" or "4 day"?

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4 days

This phrase is correct and commonly used in English when referring to a specific duration of time.

Use '4 days' when you want to specify a period of four days. It is the plural form of 'day' when talking about multiple days.

Examples:

  • I will be on vacation for 4 days.
  • It took us 4 days to complete the project.

Alternatives:

  • several days
  • a few days
  • a couple of days
  • a number of days
  • multiple days

4 day

This phrase is correct and commonly used in English when describing a single day as a unit.

Use '4 day' when you are referring to a single day as a unit. It is the singular form of 'days' when talking about one day.

Examples:

  • I need to take a 4-day course.
  • He spent 4 day hiking in the mountains.

Alternatives:

  • a single day
  • one day
  • a day
  • a day's time
  • a day's duration
Both '4 days' and '4 day' are correct, but they are used in different contexts. '4 days' is used when referring to a specific duration of time, while '4 day' is used when describing a single day as a unit. The choice between the two depends on whether you are talking about multiple days or just one day.

Last Updated: April 01, 2024

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