One gross is equal to __________.

In everyday measurement and trade, certain terms are used to count large quantities efficiently. One of these terms is a gross.

A dozen is the most basic unit, equal to 12 items. When counting larger numbers, a gross is used to simplify calculations and packaging.

Definition:

$$1\text{gross}=12\text{dozen}=12\times 12=144\text{items}$$

For example:

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  A shop selling pencils in bulk may package them in gross quantities, meaning 144 pencils per pack.

  
  


• 
  

  Other traditional units include small gross (10 dozen = 120 items) and great gross (12 gross = 1728 items).

  
  

Comparison with the given options:

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  5 dozen → equals 60 items, too small.

  
  


• 
  

  10 dozen → equals 120 items, still less than one gross.

  
  


• 
  

  12 dozen → correct, equals 144 items, which defines one gross.

  
  


• 
  

  None of them → incorrect.

  
  

The use of gross is primarily historical but still relevant in commerce, wholesale packaging, and inventory management. Understanding this measurement unit is important for basic numeracy and everyday science, as it helps students connect counting, multiplication, and real-world applications.

Thus, one gross is equal to 12 dozen (Option C), making it a fundamental concept in unit measurement and everyday calculations.