25 questions
If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∩ B?
{3, 5, 7}
{2, 3, 5, 7}
{2, 3, 5, 7, 9}
{1, 2, 3, 5, 7, 9}
What does this symbol ( ∪ ) represent in set theory?
Union
Intersection
Disjointed
Subset
What is a set?
A method of solving problems
A collection of objects
A 2-D shape
{7}