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What are subsets in math?
A set of which all the elements are contained in another set. The set of even numbers is a subset of the set of integers.
Which number belongs to the set of imaginary numbers 2?
2 does belong to the set of imaginary numbers. Any real number is also imaginary. Imaginary numbers are the set of all numbers that can be expressed as a +b*i where "i" is the square root of negative one and "a" and "b" are both real numbers.
How can you define the set of rational numbers using set notation?
Z=Integers; Rational numbers={a/b| a,b∈Z, b ≠ 0}.
What is a subset in maths?
A set "A" is said to be a subset of of set "B", if every element in set "A" is also an element of set "B". If "A" is a subset of "B" and the sets are not equal, "A" is said to be a proper subset of "B". For example: the set of natural numbers is a subset of itself. The set of square numbers is a subset (and also a proper subset) of the set of natural numbers.
What is The set of numbers expressed in the form of a fraction ab where a and b are integers and b can't equal zero?
It is the set of rational numbers.
