Returns elements that appear in an odd number of the given lists.
SymmetricDifference[list1, list2, …]
SymmetricDifference[{1, 2, c, b, a}, {4, 3, 2, 1}]
→ {3, 4, a, b, c}SymmetricDifference[{1, 2, 3, 4}, {2, 3, 4, 5}, {3, 4, 5, 6}, {4, 5, 6, 7}]
→ {1, 3, 5, 7}SymmetricDifference[{1, 2, 3}, {2., 3., 4.}]
→ {1, 2, 2., 3, 3., 4.}