Number System

Which set of numbers includes all rational and irrational numbers?

• Whole numbers

• Real numbers

• Integers

• Natural numbers

What is the smallest set of numbers that contains -5?

• Natural numbers

• Whole numbers

• Integers

• Rational numbers

Which of the following is an irrational number?

• 0.333...

• $\sqrt{16}$

• $\pi$

• -7

The set of natural numbers starts with which number?

• 0

• 1

• -1

• Any positive integer

Which property states that the order of addition does not change the sum?

• Associative property

• Distributive property

• Commutative property

• Identity property

What is the result of multiplying any real number by its multiplicative inverse?

• 0

• 1

• The number itself

• Its opposite

Which of the following is a composite number?

• 7

• 11

• 13

• 15

What is the prime factorization of 24?

• $2 \times 3 \times 4$

• $2^3 \times 3$

• $2 \times 2 \times 6$

• $3 \times 8$

What is the greatest common divisor (GCD) of 12 and 18?

• 2

• 3

• 6

• 12

What is the least common multiple (LCM) of 6 and 8?

• 2

• 12

• 24

• 48