Questions and Answers
What are whole numbers?
What defines integers?
What is a rational number?
A number that can be written as a fraction of two integers.
Define irrational numbers.
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What is the result of -54/9?
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What type of number is 3√15?
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What type of number is 32.343434343...?
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What numbers does √81 fall under?
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What is -2/7 classified as?
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What classifications apply to 0?
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What type of number is 23.9?
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What does √-25 represent?
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Study Notes
Classification of Real Numbers
- Whole Numbers: Include all counting numbers and zero, represented as {0, 1, 2, 3, 4, ...}.
- Integers: Encompass all positive and negative whole numbers along with zero, shown as {... -3, -2, -1, 0, 1, 2, 3, ...}.
- Rational Numbers: Defined as numbers that can be expressed as a fraction of two integers (e.g., a/b, where b ≠ 0).
- Irrational Numbers: Numbers that cannot be expressed as a fraction of two integers; they are characterized by non-repeating and non-terminating decimals.
Examples of Real Numbers
- -54/9: Falls under both integer and rational categories; simplifies to -6.
- 3√15: Classified as an irrational number; cannot be simplified to a fraction.
- 32.343434343...: Considered rational due to its repeating decimal pattern.
- √81: A whole, integer, rational, and natural number as it equals 9.
- -2/7: Recognized as a rational number, being a fraction of two integers.
- 0: Categorized as a whole number, integer, and rational, as it can be written as 0/1.
- 23.9: A rational number classified as a terminating decimal.
- √-25: Not a real number, falls outside the set of real numbers due to the negative square root.
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Description
This quiz covers the definitions of various types of real numbers, including whole numbers, integers, rational numbers, and irrational numbers. Test your understanding of these fundamental mathematical concepts and improve your number classification skills.