4.5 Revision - Quiz on Number Systems and Data Representation

What is a natural number?

• Any positive or negative integer

• Only numbers with fractional parts

• Positive integers and zero

• All numbers including imaginary ones

Which set includes both positive and negative whole numbers?

• ℕ (Natural Numbers)

• ℤ (Integers)

• ℚ (Rational Numbers)

• ℝ (Real Numbers)

What is a rational number?

• Any number without a fractional part

• A number that can be written as a ratio of two integers

• A number representing real-world quantities

• A number that cannot be expressed as a fraction

What makes a number irrational?

• It can be expressed as a ratio of two integers

• It includes an imaginary component

• It cannot be expressed as a fraction

• It is part of ℕ

Which number system includes all rational and irrational numbers?

• ℕ (Natural Numbers)

• ℤ (Integers)

• ℚ (Rational Numbers)

• ℝ (Real Numbers)

What is the main characteristic of ordinal numbers?

• They indicate position or order

• They include only integers

• They represent real-world quantities

• They contain fractional parts

Which base does the binary number system use?

• 2

• 8

• 10

• 16

What range of symbols does the hexadecimal system use?

• 0 to 9 only

• 0 to F

• A to Z

• 1 to 8

Which system is most commonly used in everyday life?

• Binary

• Octal

• Decimal

• Hexadecimal

What is a number base?

• The sum of all digits in a system

• The number of unique digits a system uses

• The way a number is ordered

• The positional value of each digit