Question

let a and b are two sets such that a is a subset of b the a U b​

Answer 1

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• This new set contains all the elements of set A and all the elements of set B with no repetition of elements and is named as union of set A and B. So, as all the elements of A are there in B, we will have, A∪B=B. Note: Note that if A is a subset of B then, B is called the super set of A.

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Answer 2

Answer:

If A and B are two sets such that A is a subset of B then what is a union B

This new set contains all the elements of set A and all the elements of set B with no repetition of elements and is named as union of set A and B. So, as all the elements of A are there in B, we will have, \[A \cup B = B\]. Note: Note that if A is a subset of B then, B is called the super set of A.