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Let $J = \{1, 3, 5, 7, 9\}$ and $K = \{2\}$ . What is $J \cup K$ ? $\newline$ Choices: $\newline$ (A) $\{1, 2, 3, 5, 7, 9\}$ $\newline$ (B) $\emptyset$ $\newline$ (C) $\{2, 9\}$ $\newline$ (D) $\{1, 5, 7\}$

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Q. Let

J = \{1, 3, 5, 7, 9\}

and

K = \{2\}

. What is

J \cup K

?

\newline

Choices:

\newline

(A)

\{1, 2, 3, 5, 7, 9\}

\newline

(B)

\emptyset

\newline

(C)

\{2, 9\}

\newline

(D)

\{1, 5, 7\}

Define Sets: The question prompt asks us to find the union of two sets $J$ and $K$ . The union of two sets is the set containing all the elements that are in either set. $\newline$ $J = \{1, 3, 5, 7, 9\}$ $\newline$ $K = \{2\}$ $\newline$ To find $J \cup K$ , we simply combine all unique elements from both sets.
Combine Elements: Combining the elements from both sets, we get: $\newline$ $J \cup K = \{1, 2, 3, 5, 7, 9\}$ $\newline$ We ensure that there are no repeated elements and that all elements from both sets are included.

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