This time we are looking on the **crossword puzzle clue** for: *Theatrical backdrop.*

it’s A 19 letters **crossword definition**.

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## Possible Answers:
**SET**.

**SET**.

Last seen on: –NY Times Crossword 12 Oct 21, Tuesday

–NY Times Crossword 11 Oct 21, Monday

USA Today Crossword – Sep 13 2020

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

In mathematics, a set is a well-defined collection of distinct objects, considered as an object in its own right. The arrangement of the objects in the set does not matter. A set may be denoted by placing its objects between a pair of curly braces. For example, the numbers 2, 4, and 6 are distinct objects when considered separately; when considered collectively, they form a single set of size three, written as {2, 4, 6}, which could also be written as {2, 6, 4}, {4, 2, 6}, {4, 6, 2}, {6, 2, 4} or {6, 4, 2}. Sets can also be denoted using capital roman letters in italic such as A {\displaystyle A} , B {\displaystyle B} , C {\displaystyle C} .

The concept of a set is one of the most fundamental in mathematics. Developed at the end of the 19th century, the theory of sets is now a ubiquitous part of mathematics, and can be used as a foundation from which nearly all of mathematics can be derived.