Sets/ Subsets

Front

What is a set?

Back

A set is a collection of distinct objects, considered as an object in its own right.

Front

What is a subset?

Back

A subset is a set where all elements are also contained in another set.

Front

What are rational numbers?

Back

Rational numbers are numbers that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What are irrational numbers?

Back

Irrational numbers are real numbers that cannot be expressed as a simple fraction; they have non-repeating, non-terminating decimal expansions.

Front

Give an example of a rational number.

Back

Front

Give an example of an irrational number.

Back

Front

What is the difference between whole numbers and natural numbers?

Back

Natural numbers are the set of positive integers (1, 2, 3, ...), while whole numbers include all natural numbers and zero (0, 1, 2, 3, ...).

Front

Is zero a rational number?

Back

Front

What is the union of two sets?

Back

The union of two sets is a set that contains all elements from both sets, without duplicates.

Front

What is the intersection of two sets?

Back

The intersection of two sets is a set that contains only the elements that are common to both sets.