If A={X/x is an even integer }, B={x/x is an odd integer}, C={2,3,4,5}, and D={4,5,6,7}, list the elements of?

each set:


C U D

If A={X/x is an even integer }, B={x/x is an odd integer}, C={2,3,4,5}, and D={4,5,6,7}, list the elements of?
C Union D means we make a set that contains every element of the two sets. If they both contain an element we only need to list it once.





C U D = {2,3,4,5,6,7}