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Answer:
A ∪ B = {21, 23, 24, 25, 27, 29, 30, 31}
A ∩ C = {24, 30}
Step-by-step explanation:
A = {21, 24, 27, 30} . . . . . . . . . . . . . multiples of 3
B = {21, 23, 25, 27, 29, 31} . . . . . . . odd numbers
C = {20, 22, 24, 26, 28, 30, 32} . . . even numbers
The union is the list of numbers in either set.
A ∪ B = {21, 23, 24, 25, 27, 29, 30, 31}
The intersection is the list of numbers in both sets.
A ∩ C = {24, 30}
