Use counting to determine the whole number that corresponds to the cardinality of the set. $$ A=\{7,9,11,13,15\} $$ A. $$ n(A)=5 $$ B. $$ n(A)=15 $$ C. $$ n(A)=4 $$ D. $$ n(A)=13 $$

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To determine the cardinality of the set $$ A = \{7, 9, 11, 13, 15\} $$, we need to count the number of distinct elements in the set.

1. **Identify the elements in the set**: The elements are 7, 9, 11, 13, and 15.
2. **Count the elements**: 
   - 7 (1)
   - 9 (2)
   - 11 (3)
   - 13 (4)
   - 15 (5)

There are a total of 5 distinct elements in the set $$ A $$.

Thus, the cardinality $$ n(A) $$ is 5.

The correct answer is:
A. $$ n(A) = 5 $$
The set $$ A = \{7, 9, 11, 13, 15\} $$ has 5 elements. So, $$ n(A) = 5 $$.

Use counting to determine the whole number that corresponds to the cardinality of the set. \( A=\{7,9,11,13,15\} \) A. \( n(A)=5 \) B. \( n(A)=15 \) C. \( n(A)=4 \) D. \( n(A)=13 \)

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