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Determine the elements in [tex]A \cap B[/tex] given the sets:

Set [tex]A = \{ \text{cake, cookie, pie} \}[/tex]
Set [tex]B = \{ \text{brownie, pie, scone, tart} \}[/tex].

A. \{pie\}
B. \{brownie, cake, cookie, pie, scone, tart\}
C. \{brownie, cake, cookie, pie, pie, scone, tart\}
D. \{cake, cookie, pie\}

Answer :

We are given the sets

[tex]$$
A = \{\text{cake}, \text{cookie}, \text{pie}\} \quad \text{and} \quad B = \{\text{brownie}, \text{pie}, \text{scone}, \text{tart}\}.
$$[/tex]

The intersection of two sets, denoted by [tex]$A \cap B$[/tex], is the set of elements that are common to both [tex]$A$[/tex] and [tex]$B$[/tex]. In other words,

[tex]$$
A \cap B = \{ x \mid x \in A \text{ and } x \in B \}.
$$[/tex]

Now, we identify the common elements by comparing the elements in each set:

1. From set [tex]$A$[/tex], the element "cake" is not present in set [tex]$B$[/tex].
2. The element "cookie" from set [tex]$A$[/tex] is not present in set [tex]$B$[/tex].
3. The element "pie" appears in both set [tex]$A$[/tex] and set [tex]$B$[/tex].

Since "pie" is the only element found in both [tex]$A$[/tex] and [tex]$B$[/tex], we have

[tex]$$
A \cap B = \{\text{pie}\}.
$$[/tex]

Thus, the correct answer is

[tex]$$
\{\text{pie}\}.
$$[/tex]

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