Let A={2, 4, 6, 8} and B={2, 3, 5, 7, 9}. Compute n(A).
17
14
5
8
4
1
Please help thank you
so, do you know what n(a) means?
If you do, this cannot be a hard problem.
I don't what n(a) means.
It means the number of elements in the set.
Clearly you have not studied your material.
To compute n(A), we need to count the number of elements in the set A.
In set A={2, 4, 6, 8}, there are 4 elements. So n(A) is equal to 4.
Hence, the answer is: 4.