{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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a builder notation is like this < x/x is a set of nos. up to 7>
describing of one object
i don't knoww
Roster method and set-builder notation. Example of Roster Method {a, b, c} {1, 2, 3} {2, 4, 6, 8, 10...} Example of Set-builder Notation: {x/x is a real number} {x/x is a letter from the English alphabet} {x/x is a multiple of 2}
x|x is the letter of monkey