It looks like you are trying to categorize numbers as rational or irrational. Here’s a brief explanation of the two types of numbers:
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Rational Numbers: These are numbers that can be expressed as a fraction (a/b), where "a" and "b" are integers and "b" is not equal to zero. Examples include 1/2, 3, -4, and 0.75.
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Irrational Numbers: These cannot be expressed as a simple fraction. They are non-repeating, non-terminating decimals. Examples include √2, π (pi), and e (Euler's number).
Now, let’s classify the numbers you mentioned:
- 2 - Rational (it can be expressed as 2/1)
- √2 (if this is what you meant by --rational) - Irrational
- –rational (not a specific number) - Cannot classify without a specific value
- 1819 - Rational (it can be expressed as 1819/1)
- –2 - Rational (it can be expressed as -2/1)
- 1 - Rational (it can be expressed as 1/1)
If you have other specific numbers you'd like to evaluate, please provide them!