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Q: What makes a real number real?
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Is 1234567890 a real number?

Yes, 1234567890 is a real number. If you put any numbers together it makes yet another number.


Why is 23 not a real number?

This question is based on a false assumption that 23 is not a real number! Well, sorry to disappoint you, but it is a real number and so the question makes no sense!.


What kind of number is 1.2?

the number 1.2 is a real and rational number


What are all numbers than make a square?

All numbers can make a square. Every real number makes a positive real square. Every rational number makes a rational square. Every integer makes a perfect square.


Is a fraction a number?

yes, a fraction IS composed of numbers AND it is PART of a number, so it makes it a number.========================Yes, consider 1/2, this is a fraction (a half) but it is the same as 0.5 which is a real number.


Is 5i a complex number?

Yes it is. All pure imaginary numbers (such as 5i) as well as all real numbers and any combination of real & imaginary (by adding, subtractin, multiplying, dividing) makes a complex number.


What makes 15 a whole number?

Whole numbers consist of numbers from 0 to infinity. 15 is included in this set which makes it a whole number. Side Note: 15 is also a counting #, integer, rational #, and a real #


Can a square of real number is a real number?

The square of a real number is always a real number.


Is a negative number unreal?

No, they are quite real. It is just that in some situations it makes sense to use negative numbers, in others not.


What does the probability of a independent event that is likely to happen?

It is a real number between 0.5 and 1. Whether or not it is independent makes no difference to this answer.


What is the real number in 101.7?

The real number in '101.7' is 101. A real number is a positive whole number.


What are complex numbers?

A complex number is a number with a real and an imaginary part.Look at the links I will place below to find out moreA complex number is any number that can be represented as the sum of some number on the real number line and some number on the imaginary number line, a number line perpendicular to the real number line that contains multiples of sqrt(-1), which is more commonly denoted as i.