The grouping in which the numbers are taken does not affect the sum or product.
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The Real numbers.
Infinite
Yes, every irrational number is also a real number. Real numbers include all the numbers on the number line, which consists of both rational and irrational numbers. Rational numbers can be expressed as fractions, whereas irrational numbers cannot be expressed as simple fractions. So, while all irrational numbers are real numbers, not all real numbers are irrational—some are rational.
The set of real numbers.
A monomial that is a real number is called a constant.