Counting $B$ Inside a Small Universe
Difficulty: Medium · Topics: Discrete Mathematics, Sets, Complements
A and B are subsets of the universal set E and
n(E)=12, n(Asetminus B)=4, n(A'cap B')=3.
How many elements does the set B have?
Difficulty: Medium · Topics: Discrete Mathematics, Sets, Complements
A and B are subsets of the universal set E and
n(E)=12, n(Asetminus B)=4, n(A'cap B')=3.
How many elements does the set B have?