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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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a number of various

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "a number of various" is not correct and is generally considered redundant in written English.
You can use it when trying to describe multiple items or options, but it is better to choose one descriptor to avoid redundancy. Example: "There are a number of various options available for you to choose from."

⚠ May contain grammatical issues

Science

News & Media

Encyclopedias

Academia

Wiki

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Advanced nuclear power plants are currently being proposed with a number of various designs.

A number of various modeling methodologies and modeling designs have been proposed including neural networks, fuzzy, and neurofuzzy models.

In a grounded mode a number of various carbon nanostructures are formed depending on the probe location in flame.

Science

Carbon

There are a number of various paint programs (such as Microsoft Paint) which are well-known for accomplishing similar functions as our design.

Our body must defend itself against many different disease-causing substances such as viruses, bacteria, and parasites, as well as tumors and a number of various harmful agents.

Of the larger ring heterocycles, the most important are the crown ethers, which contain one or more heterocyclic rings comprising 12 or more ring atoms and involving a number of various heteroatoms, usually nitrogen, oxygen, or sulfur.

Encyclopedias

Britannica

Since each industry has a unique set of characteristics which evidently drive the design supply chain network, a number of various models have been formulated to meet the needs of such business contexts.

A number of various designs of growth crucible are examined showing that optimized triple-electrode system is capable to provide perfectly uniform growth rate distribution over a large portion of the surface of the growing crystal.

A recently proposed coenzyme regeneration system employing laccase and a number of various redox mediators for the oxidation of NAD(P H was studied in detail by kinetic characterization of individual reaction steps.

A precise knowledge of these quantities for a number of various materials is necessary to estimate the limits for stable flow conditions on the basis of complex numerical simulation programs.

Science

Energy

A number of various empirical formulas describing power spectral density of across-wind load at vortex excitation depending on flow conditions, range of Reynolds number, and lock-in phenomenon or its absence can be found in the literature.

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Expert writing Tips

Best practice

Avoid using the phrase "a number of various" in formal writing. Opt for more concise and grammatically correct alternatives such as "several different" or "a variety of".

Common error

The primary error is the redundancy of using both "a number of" and "various" together. Choose one or the other to avoid unnecessary repetition. For example, prefer "a number of options" or "various options" rather than "a number of various options".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

80%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase functions as a determiner followed by an adjective, attempting to quantify and describe a set of items. However, Ludwig AI points out that it's redundant since both "a number of" and "various" suggest multiplicity.

Expression frequency: Very common

Frequent in

Science

43%

News & Media

25%

Wiki

5%

Less common in

Encyclopedias

5%

Academia

5%

Formal & Business

2%

Ludwig's WRAP-UP

In summary, while the phrase "a number of various" appears frequently across diverse sources, it's generally considered grammatically redundant. Ludwig AI suggests opting for more concise alternatives like "several different" or "a variety of" to enhance clarity and precision in writing. Its prevalence suggests common usage, but adhering to grammatical best practices improves overall communication effectiveness. The phrase's presence in both scientific and general contexts indicates a neutral register, although formal writing benefits from the suggested alternatives.

FAQs

What are some alternatives to "a number of various"?

You can use alternatives like "several different", "a variety of", or "numerous distinct" to avoid redundancy.

Is it grammatically correct to use "a number of various"?

No, the phrase "a number of various" is considered grammatically incorrect due to the redundant use of "a number of" and "various". It's better to choose one or the other.

How can I use "a variety of" instead of "a number of various"?

Replace the entire phrase with "a variety of" followed by the noun you are describing. For example, instead of "a number of various methods", use "a variety of methods".

What's the difference between "various" and "a number of various"?

"Various" simply means different or diverse. "A number of various" is redundant because "a number of" already implies multiple items. Using just "various" is more concise and grammatically sound.

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