# Answer to Question #46070 in Algebra for jasvinder

Question #46070

Prove that if A and B are any two sets such that A ⊆ B, then A ∪ B = B

i) by direct method;

ii) by proving its contrapositive;

iii) by contradiction.

i) by direct method;

ii) by proving its contrapositive;

iii) by contradiction.

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