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Question:

Set A includes the even integers greater than 0 and less than 10. Set B includes the prime numbers less than 15. Which of these represents A \u222A B?

A {2 , 3 , 4 , 5 , 6 , 7 , 8 , 11 , 13}
Explaination

The symbol U represents the union of two sets; its members are anything that is in either of the two sets whose union is being considered. A = {2 ,4 ,6 ,8} and B = {2 , 3 , 5 , 7 , 11 , 13 }. Therefore A \u222A B = {2 , 3 , 4 , 5 , 6 , 7 , 8 , 11 , 13}. Recall that 1 is not prime.