Answer
a. no
b. yes
Work Step by Step
$A = \{0, 1, 1, 2, 2, 2, 3, 3, 3, 3\}$
$B = \{3, 2, 1, 0\}$
a. Those sets aren't equivalent as they have a different number of elements.
b. Those sets are equal because their unique elements are exactly the same
( $0, 1, 2, 3$ for both).
