What is the meaning of two numbers in parentheses without a fraction line?

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Discussion Overview

The discussion revolves around the interpretation of two numbers presented in parentheses that resemble a fraction but lack a fraction line. Participants explore the potential meaning of this notation, specifically in the context of mathematical expressions.

Discussion Character

  • Conceptual clarification, Technical explanation

Main Points Raised

  • Some participants suggest that the notation may refer to a binomial coefficient, represented as \binom n k = \frac {n!}{k!(n-k)!}.
  • Others express confusion or delay in recalling the terminology associated with the notation.
  • A participant shares a link to further information about the binomial coefficient, indicating it as a helpful resource.
  • Several participants express appreciation for the clarification and share that they have bookmarked the resource for future reference.

Areas of Agreement / Disagreement

Participants generally agree that the notation likely refers to a binomial coefficient, but there is no extensive exploration of alternative interpretations or disagreements regarding this interpretation.

Contextual Notes

Some participants mention difficulty in recalling the terminology, which may indicate a lack of familiarity with the concept among certain members.

Who May Find This Useful

This discussion may be useful for individuals seeking clarification on mathematical notation, particularly in the context of binomial coefficients and related concepts.

moonman239
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when you have two numbers that look almost like a fraction (except without the line in the middle), surrounded by parentheses?
 
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moonman239 said:
when you have two numbers that look almost like a fraction (except without the line in the middle), surrounded by parentheses?

You may be describing a binomial coefficient:

\binom n k = \frac {n!}{k!(n-k)!}
 
Damnit! I was too slow (took me a while to remember the English)! :biggrin:

Anyway...here it is Binomial Coefficient
 
Resolved, thanks y'all.
 
phyzmatix said:
Legend! Didn't know about this. Thanks!

It's on my bookmarks toolbar!
 

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