What is the cardinality of the set $A=1,3,5,7,9$?

Step-by-step solution

1. List the distinct elements of the set: $1,3,5,7,9$ – five elements in total.
2. State the cardinality: $|A|=5$.
3. Thus the answer is $5$.

Concept tested: cardinality of a finite set

Published 13 October 2026 · How this solution was prepared and checked