# Homework Help: Sets: Find n(A)

1. Jun 29, 2014

1. The problem statement, all variables and given/known data

$n(A)$
I have some doubts.
Obviously, $n(A)$ means the number of elements in set A.
Should it be 3 or 6?

Should I consider each number to be a different element?

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2. Jun 29, 2014

### micromass

The names of the elements are irrelevant. If you change the names $\{1,2,3\}$ by $\{a,b,c\}$, then it will have the same number of elements. Does that answer your question?

3. Jun 29, 2014