This time we are looking on the **crossword puzzle clue** for: *Board-and-pieces units.*

it’s A 22 letters **crossword definition**.

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## Possible Answers:
**SETS**.

**SETS**.

Last seen on: LA Times Crossword 10 Nov 19, Sunday

### Random information on the term “SETS”:

In mathematics, a set is a well-defined collection of distinct objects, considered as an object in its own right. For example, the numbers 2, 4, and 6 are distinct objects when considered separately, but when they are considered collectively they form a single set of size three, written {2, 4, 6}. The concept of a set is one of the most fundamental in mathematics. Developed at the end of the 19th century, set theory is now a ubiquitous part of mathematics, and can be used as a foundation from which nearly all of mathematics can be derived.

The German word Menge, rendered as “set” in English, was coined by Bernard Bolzano in his work The Paradoxes of the Infinite.

A set is a well-defined collection of distinct objects. The objects that make up a set (also known as the set’s elements or members) can be anything: numbers, people, letters of the alphabet, other sets, and so on. Georg Cantor, one of the founders of set theory, gave the following definition of a set at the beginning of his Beiträge zur Begründung der transfiniten Mengenlehre: