SETS. Basics of sets Google Play

The application generates random problems about sets:

With MEMBERSHIP, you must say an element of the set A
 
with SUBSETS,  you must decide if the set A is a subset of B

with UNION you have to enter an element of A U B
   
with  INTERSECTION you have to enter an element of A ∩ B

with DIFFERENCE you have to enter an element of A - B

with CARDINALITY you must know the cardinality of a set

with CARTESIAN PRODUCT you have to complete a pair (a, b) of the cartesian product of two sets

The application guide you throughout the different problems.
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