Question

Given A = {a, b, c} and B = {c, a}, which of the following is true?
A ⊂ B
B ⊂ A

Answer 1

\(\subset \) means "proper subset", yes?

so \( X \subset Y\) is true if every element in X is also in Y, but there is at least one element in Y that is not in X

apply that?