Let $$ A=\{h, i, j, k, l\} $$ and $$ B=\{h, j, l, m, n\} $$. Find $$ n(A \cup B) $$. A. 2 B. 7 C. 3 D. 10

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1. Write down the sets:
   - $$ A = \{h, i, j, k, l\} $$
   - $$ B = \{h, j, l, m, n\} $$

2. The union of two sets, $$ A \cup B $$, is the set containing all elements that are in $$ A $$ or $$ B $$ (or both). Therefore, list the unique elements from both sets:
   $$
   A \cup B = \{h, i, j, k, l, m, n\}
   $$

3. Count the elements in $$ A \cup B $$. There are 7 elements:
   $$
   n(A \cup B) = 7
   $$

4. The correct answer is B. 7.
$$ n(A \cup B) = 7 $$, so the answer is B. 7.

Let \( A=\{h, i, j, k, l\} \) and \( B=\{h, j, l, m, n\} \). Find \( n(A \cup B) \). A. 2 B. 7 C. 3 D. 10

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