Question

Q:- If A and B are two sets such that A⊂B, then what is A∪B ?​

Answer 1

Answer:

$lets \: take \: an \: example$

A={1,2}

B={1,2,3}

every element of A is in B

so A is a subset of B

A union B = {1,2} union {1,2,3}

={1,2,3}

=B

Step-by-step explanation:

hope it helps you

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Answer 2

Answer:

${\huge{\underline{\small{\bold{\blue{ heya \:mate}}}}}}$

Given that, A is a subset of B which implies all element of set A is belongs to set B.

So that A ∪ B = B.

hope help u mate ✌