I shall answer this under the assumption that 'n' means intersection.
Recall the definitions of intersection and union:
1) x is an element of AnB if and only if x is an element of A and x is an element of B
2) x is an element of AUB if and only if x is an element of A or x is an element of B
and recall that
3) X is an (improper) subset of Y if and only if every element of X is an element of Y
Thus, if x is an element of AnB, then x is an element of A and an element of B, so it clearly is an element A (law of simplification in logic). This implies AnB is a subset of A. Now if x is an element of A, it is certainly an element of A or an element of B (law of addition in logic), and therefore x is an element of AUB.
There are other ways of answering this based on axiomatic approaches.
probablity of union probabilty of union is define as P(AUB)=P(A)+P(B)-P(AnB) (for not mutualy exclusive data( where atleast one event is common in two samples) P(AUB)=P(A)+P(B) (mutualy exculsive) probablity of intersect P(AnB)=P(A).P(B)
prove that every subset of a finite set is a finite set?
Max Aub's birth name is Max Aub Mohrenwitz.
Carmen Aub's birth name is Carmen Aub Romero.
Aub Hodgson died in 1982.
Aub Hodgson was born in 1912.
Aub Lawson was born in 1915.
The full form of ANB is Algemene Bank Nederland. It is a bank in the Netherlands.
Matt Aub was born on 1972-02-29.
Aub Lawson died on 1977-01-20.
A - B is null.=> there are no elements in A - B.=> there are no elements such that they are in A but not in B.=> any element in A is in B.=> A is a subset of B.
Max Aub was born on June 2, 1903, in Paris, France.