Problem:
Let A = {4, 5, 6, 7}
Which of the following sets are equal to A?
a {5, 6, 4, 7}
b {7, 4, 6, 5}
c {3, 4, 5, 6, 7}
a. a and b
b. a, b and c
c. b
d. a
e. a and c
Additional Information;
This question is from Mathematics as well as it is about finding the set that is equal to A.