SOLUTION: Let A = {1, 2, 3} and B = {{1,2}, 3} then A U B IS??

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Question 539701: Let A = {1, 2, 3} and B = {{1,2}, 3}
then A U B IS??

Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
If the set {1,2} is an element of B, then A union B is {1,2,3,{1,2}}.