What refers to the collection of all elements in a certain condition? 

True or false: The cardinality of a null set is infinite

True or false: If sets A and B are disjoint sets, then n(A∩B) is equal to n(A)+n(B)

What type of set contains no element? 

What type of set contains all its elements which also belong to a larger set? 

What do we call two sets without common elements?

What type of set contains a definite number of elements? 

Which of the following is a subset of the set of integers? 

What type of set contains only one element? 

What type of set contains an infinite number of elements?