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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
for 3
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "for 3" is correct and usable in written English, depending on the context.
You can use it when referring to a quantity, duration, or a specific grouping of three items or people. Example: "I need three chairs for 3 people at the meeting."
✓ Grammatically correct
Wiki
News & Media
Science
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
56 human-written examples
"It counted for 3.
News & Media
Winn went 1 for 3.
News & Media
He went 1 for 3.
News & Media
For 3 and older.
News & Media
week for 3 weeks.
News & Media
Rest for 3 minutes.
News & Media
Poach for 3 minutes.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
4 human-written examples
First time — only for <3.
News & Media
ready for 3-D.
News & Media
Leave for 3-5 days.
Wiki
Roast for 3 4 hours.
Wiki
Expert writing Tips
Best practice
When using "for 3" to indicate duration, always specify the unit of time (e.g., "for 3 days", "for 3 hours") to avoid ambiguity.
Common error
Avoid using "for 3" without specifying what the '3' refers to. For example, instead of writing "The recipe calls for 3", specify "The recipe calls for 3 eggs" to ensure clarity.
Source & Trust
78%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "for 3" typically functions as a prepositional phrase modifying a verb or noun, indicating duration, quantity, or suitability. According to Ludwig, it is considered grammatically correct. It specifies a condition or purpose related to the number three, as seen in examples like "cook for 3 minutes".
Frequent in
Wiki
40%
News & Media
32%
Science
28%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "for 3" is a versatile prepositional phrase used to specify duration, quantity, or suitability concerning the number three. As Ludwig confirms, it's grammatically sound and sees frequent usage across various contexts, particularly in wikis, news media, and scientific publications. While generally neutral in register, it's important to ensure clarity by specifying the unit of measurement. When using the phrase, consider alternatives like "group of three" or "trio" for specific meanings. Overall, "for 3" is a common and acceptable phrase, provided it's used with sufficient context.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
group of three
Refers to a set or collection containing three items or people.
a period of three
Specifies a duration or timeframe that spans three units of time.
lasting three
Emphasizes the duration of something being three units of time.
during three
Indicates an action or event happening across the quantity of three.
intended for three
Highlights the suitability or purpose of something for a group of three.
designed for three
Focuses on the planning or creation of something with a specific group size in mind.
threefold
Implies something that is three times as large or has three parts.
over three units of
Highlights that something is evaluated based on a quantity of three.
trio
A concise term for a group of three, often used in musical or artistic contexts.
taking three
Focuses on the number of something being consumed.
FAQs
How can I use "for 3" in a sentence?
The phrase "for 3" is versatile and can be used in various contexts, such as indicating a duration (e.g., "cook for 3 minutes"), a quantity (e.g., "suitable for 3 people"), or an age range (e.g., "recommended for 3-year-olds").
What are some alternatives to "for 3" when referring to a group?
When referring to a group, consider using "group of three", "trio", or a more descriptive term depending on the context.
Is it always necessary to specify the unit of measurement after "for 3"?
Yes, it is generally best practice to specify the unit of measurement (e.g., minutes, days, years) after "for 3" to avoid ambiguity and ensure that the intended meaning is clear.
What's the difference between "for 3" and "for three"?
While both "for 3" and "for three" are acceptable, using the numeral "3" is more common in informal contexts or when space is limited, while spelling out "three" is more formal and often preferred in academic or professional writing.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
78%
Authority and reliability
4.1/5
Expert rating
Real-world application tested