Question

lfA and B are two sets such that A subsets B, then Aunion B is
(A) A
(B) Null set
(C) B
(D) (infinte)
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Answer 1

Answer:

if A is subset of B then,

AUB=B

so, Right answer is (C) B

Answer 2

Answer:

AUB=B

Step-by-step explanation:

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.