Answer
a. yes b.yes
Work Step by Step
$A = \{x|x ∈ N$ and $200 \leq x \leq 206\}$
$B = \{x|x ∈ N$ and $199 \lt x \lt 207\}$
Expressed using the roster method:
$A = \{200, 201, 202, 203, 204, 205, 206\}$
$B = \{200, 201, 202, 203, 204, 205, 206\}$
a. Those sets are equivalent as they have the same number of elements.
b. Those sets are equal as their elements are exactly the same.
