Equal Rings
Difficulty: Easy · Topics: Discrete Mathematics, Sets, Subsets
Asubset Bsubset C, and about the numbers of elements of A, B and C it is known that
n(Csetminus B)=n(Bsetminus A)=n(A), n(C)=42.
How many elements does the set B have?
Difficulty: Easy · Topics: Discrete Mathematics, Sets, Subsets
Asubset Bsubset C, and about the numbers of elements of A, B and C it is known that
n(Csetminus B)=n(Bsetminus A)=n(A), n(C)=42.
How many elements does the set B have?