Podcast
Questions and Answers
Which of the following is NOT an example of a real number?
Which of the following is NOT an example of a real number?
- √2
- 3/4
- -1
- $i$ (imaginary unit) (correct)
What type of number is used to represent the square root of 2?
What type of number is used to represent the square root of 2?
- Complex number
- Rational number
- Whole number
- Irrational number (correct)
In the context of real numbers, what does the term 'complex numbers' refer to?
In the context of real numbers, what does the term 'complex numbers' refer to?
- Numbers with only imaginary value
- Numbers with no defined value
- Numbers with both real and imaginary parts (correct)
- Numbers with only real value
Which of the following is an example of a real number?
Which of the following is an example of a real number?
Which type of number is used to measure temperature in degrees Celsius?
Which type of number is used to measure temperature in degrees Celsius?
Flashcards
What is an irrational number?
What is an irrational number?
A number that cannot be expressed as a ratio of two integers.
What are complex numbers?
What are complex numbers?
Numbers that have both real and imaginary components.
What is a rational number?
What is a rational number?
A number that can be expressed exactly as a fraction (a/b) where a and b are integers.
What is an imaginary unit?
What is an imaginary unit?
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What is a real number?
What is a real number?
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Study Notes
Number Systems
- A complex number is NOT an example of a real number.
- The square root of 2 is an irrational number, which is a type of real number.
- In the context of real numbers, 'complex numbers' refer to numbers that have both real and imaginary parts.
- Examples of real numbers include integers, fractions, and decimals.
- Real numbers are used to measure temperature in degrees Celsius.
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