First slide

Operations on Sets

Question

Let $A = \{a, b, c\}, B = \{b, c, d\}, C = \{a, b, d, e\},$ then $A \cap (B \cup C)$ is

Easy

A

$\{a, b, c\}$
B

$\{b, c, d\}$
C

$\{a, b, d, e\}$
D

$\{e\}$

Solution

$B \cup C = \{a, b, c, d, e\}$
$∴ A \cap (B \cup C) = \{a, b, c\} \cap \{a, b, c, d, e\} = \{a, b, c\} .$

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