Use these sets to find the following. Identify any disjoint sets.
-Let $\mathrm { U } = \{ 9,10,11,12,13,14,15,16,17,18,19 \} , \mathrm { M } = \{ 9,11,13,15 \} , \mathrm { N } = \{ 10,12,14,16,18 \}$, $Q = \{ 9,11,13,15,17,19 \}$, and $R = \{ 9,10,11,12 \}$.
$\mathrm { M } \cup \mathrm { N }$
A) $\{ 9,10,11,12,13,14,18 \}$
B) $\varnothing ; \mathrm { M }$ and $\mathrm { N }$ are disjoint sets.
C) $\{ 9,10,11,12,13,14,15,16,18 \}$
D) $\{ 10,11,12,13,14,15,16,17,18 \}$

Question

Quizplus · Accepted Answer

The union of sets M and N, denoted as $M \cup N$, includes all elements that are in M, in N, or in both. Set M has \{9,11,13,15\} and set N has \{10,12,14,16,18\}. Combining these without repetition gives \{9,10,11,12,13,14,15,16,18\}, which matches choice C.