Exploring Number Systems and Classifications

Which of the following is NOT a type of number mentioned in the introduction?

• Whole numbers

• Fractions

• Imaginary numbers

• Mixed numbers

What is the root word of 'rational'?

• Rate

• Ratio

• Rationalize

• Ration

How is a ratio usually written?

• As a decimal

• With the word 'to'

• With a colon

• As a fraction

Which of the following is an example of an irrational number?

• 1/2

• 0.25

• Pi (π)

• 2

What is a characteristic of irrational numbers?

• They can be written as a fraction

• They have a repeating decimal pattern

• They have non-repeating, non-terminating decimals

• They are whole numbers

Which of the following is a real number?

• Square root of -1

• Pi (π)

• Imaginary unit (i)

• None of the above

What are real numbers composed of?

• Only rational numbers

• Only irrational numbers

• Neither rational nor irrational numbers

• Both rational and irrational numbers

Which set of numbers includes both positive and negative whole numbers, including zero?

• Natural numbers

• Whole numbers

• Rational numbers

• Integers

Can a number be both rational and irrational at the same time?

• Depends on the number

• Yes

• No

• Sometimes

Which of the following numbers is an integer?

• 0.25

• Square root of 2

• Negative 7

• Pi (π)