A set which contains any irrational or complex numbers.
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Yes.
Some rational numbers are whole numbers, some are not. The set of whole numbers is a proper subset of rational numbers.
Rational (ℚ) which is a subset of Real (ℝ) which is a subset of Complex (ℂ).
No, the set of mixed numbers is a subset of the set of rational numbers. For example the mixed number 1 ¼ is the same as the improper fraction 5/4 [a rational number]. Note that it is a subset, because integers are also rational numbers, but a mixed number will not be an integer. Also, any fraction between 0 and 1 will not be a mixed number.
No, they are complementary sets. No rational number is irrational and no irrational number is rational.Irrational means not rational.