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Is -2.5 a real number

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Anonymous

12y ago
Updated: 10/17/2024

Yes it is. While this may appear at first to be an easy question, it is NOT. Because although many would know right away that 25 is real, defining the real numbers is not easy at all. Many define them and all the rational number and the Irrational Numbers. But this is not enough, some define them in a way that most non- mathematicians would not understand. They say the reals are the equivalence classes of Cauchy sequences. This probably does not help you, but it may help somebody else. One other definition involves Dedekind cuts. In any case, 25 is real.

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Wiki User

16y ago

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Related Questions

Is the root of 25 a real number?

Yes. The square root of 25 is 5, which is a real number.


Is the square root of 25 a real number?

no. is not a real number


Is 25 a real and rational number?

Yes, 25 is real and rational.


Is 5 squared a real number?

Yes, Any real number squared is a real number. In this case that number is 25.


Can the square root of 25 be a real number?

the square root of 25 is 5


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Yes, Any real number squared is a real number. In this case that number is 25.


Is radical 25 a real number?

If by "radical" you mean "square root of", then yes. Both square roots of 25 are real numbers.


What is the real number root of -25?

There is no real number [square] root of a negative number. There is a real cube root and a real fiftth root etc, but root, by itself, implies square root.


Is the square root of 8 over 25 rational irrational or a real number?

The square root of 8 over 25 is irrational, and real.


Is the square root of negative 25 a rational number?

The square root of -25 is not a real number, as it involves taking the square root of a negative number which results in an imaginary number. In this case, the square root of -25 is 5i, where i represents the imaginary unit. Since rational numbers are a subset of real numbers, the square root of -25, being an imaginary number, is not a rational number.


Why does the square root of -25 have no real solution?

Because the square root of -25 would be that number that, squared, would equal -25. No number, positive or negative, can result in a negative square. Since -25 is a negative number, no number, positive or negative, can be squared to equal -25.


Is 25 real number rational number irrational number integer whole number natural number?

All of them except irrational number.