Is 5 a rational number? The answer is yes. Rational numbers are numbers that can be expressed as a fraction of two integers, or whole numbers. 5 can be expressed as 5/1, so it is a rational number.
Here are some other examples of rational numbers
-1/2
-3/4
-5/6
-7/8
All integers are also rational numbers, since they can be expressed as a fraction with a denominator of 1. For example, -3 can be expressed as -3/1.
Irrational numbers, on the other hand, cannot be expressed as a fraction of two integers. They are decimal numbers that go on forever, without repeating. For example, pi is an irrational number.
Here are some examples of irrational numbers:
- pi
- √2
- √3
- e
Rational numbers are important in many areas of mathematics, including algebra, geometry, and calculus. They are also used in many real-world applications, such as physics, engineering, and finance.
Rational Number | Fraction |
---|---|
5 | 5/1 |
-3 | -3/1 |
1/2 | 1/2 |
Irrational Number | Decimal |
---|---|
Pi | 3.14159265... |
√2 | 1.41421356... |
√3 | 1.73205081... |
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