Is A ⊂ B? What is A ∪ B?

Tuesday, 8 April 2014
Let A = {a, b}, B = {a, b, c}. Is A ⊂ B? What is A ∪ B? 
Answer
Here, A = {a, b} and B = {a, b, c}
All elements of set A belongs to set B so that A ⊂ B is a correct statement.
A∪ B = {a, b, c} = B

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