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An irrational number is a real number that cannot be expressed as a simple fraction or ratio of two integers. These numbers have non-repeating, non-terminating decimal expansions. Examples of Irrational Numbers include the square root of 2, pi, and the golden ratio. Irrational numbers are an essential part of mathematics and play a crucial role in various mathematical proofs and calculations.
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Is 21 over the square root of 4 a rational or irrational?
It is equal to 21/2 which is a rational number
What are irational and rational numbers?
A rational number is one that can be written as a fraction, with whole numbers for numerator and denominator; for example 1/2, 3/5, 7/3, and any whole number (for example, 7 = 7/1). An irrational number is one that can not be written in such a way, for example the square root of any number except a perfect square (square root of 2, of 3, of 5, etc.), pi, e, etc.
What are the rules fr multiplication and divisions of integers?
(positive number) x (positive number) = positive number (positive number)/(positive number) = positive number (positive number) x ( negative number) = negative number (positive number)/( negative number) = negative number (negative number) x (negative number) = positive number (negative number)/(negative number) = positive number
What is a negative number divided by a negative number?
A negative number divided by a negative number is a positive number.
Is 81 a rational number?
Yes. 81 is a:- Real number - Rational number - Integer - Natural number - Counting number - Square number - Odd number
