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{7, 3, 25, 1} is a set of numbers that contains the integers 7, 3, 25, and 1 respectively.

Commonly it's also in the form of {x|when x meats these conditions} such as {x|3 <= x < 7}

The conditions are commonly specific predetermined ranges such as "R" which is real numbers or within 3 and 7 but only integers (denoted by the symbold "Z"). These are represented by symbols reflecting basic logic like set interception (overlap).

Check the link for simple examples.

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11y ago

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