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Questions and Answers
What type of number is the golden ratio, $\phi$?
What type of number is the golden ratio, $\phi$?
- Rational
- Irrational (correct)
- Real
- Integer
Which of the following is a rational number?
Which of the following is a rational number?
- $\sqrt{2}$
- $\frac{5}{9}$ (correct)
- $e$
- $\pi$
Which statement about rational numbers is true?
Which statement about rational numbers is true?
- They can only be expressed as fractions
- Their decimal expansion either terminates or repeats (correct)
- They include numbers like $\pi$ and $e$
- Their decimal expansion is always non-repeating
What is the set of all rational numbers usually denoted by?
What is the set of all rational numbers usually denoted by?
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Which type of number is $-\frac{3}{4}$?
Which type of number is $-\frac{3}{4}$?
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Study Notes
Types of Numbers
- The golden ratio, $\phi$, is an irrational number.
Rational Numbers
- A rational number is one of the options.
- The statement "Rational numbers can be expressed as the ratio of two integers" is true about rational numbers.
Notation
- The set of all rational numbers is usually denoted by Q.
Example of Rational Number
- $-\frac{3}{4}$ is a rational number.
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