46. Union and Intersection

Front

What does the symbol ∪ represent?

Back

Union 'or'.

Front

If A = {1, 2, 3, 4, 5, 6} and B = {1, 2, 3, 5, 7, 9}, what is A ⋂ B?

Back

A ⋂ B = {1, 2, 3, 5}

Front

If A = {1, 2, 3, 4, 5, 6} and B = {1, 2, 3, 5, 7, 9}, what is A U B?

Back

A U B = {1, 2, 3, 4, 5, 6, 7, 9}

Front

The members of Set A ∪ B are: If A = {2, 5, 9} and B = {8, 10, 13, 15, 17, 19}, what is A ∪ B?

Back

A ∪ B = {2, 5, 8, 9, 10, 13, 15, 17, 19}

Front

A = {1, 2, 3} and B = {3, 4, 5}. Find A ∩ B.

Back

A ∩ B = {3}

Front

Define the term 'Intersection' in set theory.

Back

Intersection refers to the set containing all elements that are common to both sets.

Front

Define the term 'Union' in set theory.

Back

Union refers to the set containing all elements from both sets, without duplicates.

Front

What is the result of A ∪ A?

Back

A ∪ A = A (the union of a set with itself is the set itself).

Front

If A = {x | x is an even number} and B = {x | x is a prime number}, what is A ∩ B?

Back

A ∩ B = {2} (the only even prime number).

Front

If A = {1, 2, 3} and B = {4, 5, 6}, what is A ∩ B?

Back

A ∩ B = {} (the intersection is empty).