Q: Set C = {3,5,9} and Set D = {2,3,4,7}. What is the union of Set C and Set D?
UNANSWERED.
The correct answer is C.
A: {2,3,4,5,7,9} is the correct answer.
To get the union of 2 sets, combine the sets into 1 list, but write each number only once. So the union of {3,5,9} and {2,3,4,7} is {2,3,4,5,7,9}. Answer choice B) {2,3,3,4,5,7,9} is wrong because it lists the number 3 twice.
