Let $\begin{aligned}
A & = \{ \text { Janet, Jill, Sally, Lucy } \} \
B & = \{ \text { Jill, Lucy, Jennifer } \} \
C & = \{ \text { Joan, Jill, Lucy } \}
\end{aligned}$
Find the set $( A \cup B ) \cup C$ .

A) $\{ \text { Joan, Jill, Lucy\} }$
B) $\{ \text { Janet, Jill, Sally, Lucy, Jennifer, Joan } \}$
C) $\{ \text { Janet, Jill, Sally, Lucy, Jennifer, Sally } \}$
D) $\{ \text { Jill, Lucy } \}$
E) $\varnothing$

Question

Let   $\begin{aligned}
A & = \{ \text { Janet, Jill, Sally, Lucy } \} \
B & = \{ \text { Jill, Lucy, Jennifer } \} \
C & = \{ \text { Joan, Jill, Lucy } \}
\end{aligned}$  
Find the set $( A \cup B ) \cup C$ .
 
A) $\{ \text { Joan, Jill, Lucy\} }$
B)   $\{ \text { Janet, Jill, Sally, Lucy, Jennifer, Joan } \}$
C)   $\{ \text { Janet, Jill, Sally, Lucy, Jennifer, Sally } \}$
D) $\{ \text { Jill, Lucy } \}$
E)   $\varnothing$

Quizplus · Accepted Answer

The union of sets A, B, and C includes all unique elements from each set, which are Janet, Jill, Sally, Lucy, Jennifer, and Joan.

Let Find the Set (A∪B)∪C( A \cup B ) \cup C(A∪B)∪C

Let Find the Set $( A \cup B ) \cup C$