Given $$ U=\{1,2,3,4,5,6,7,8,9\}, A=\{1,2,3,4\}, B=\{2,4,6\}, C=\{1,3,6,9\} $$ Find $$ n(U) $$

Question

UpStudy AI · Accepted Answer

To find $$ n(U) $$, which represents the number of elements in the universal set $$ U $$, we simply count the elements in the set $$ U $$.

The set $$ U $$ is given as:
$$
U = \{1, 2, 3, 4, 5, 6, 7, 8, 9\}
$$

Now, let's count the elements:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9

There are a total of 9 elements in the set $$ U $$.

Thus, we have:
$$
n(U) = 9
$$
$$ n(U) = 9 $$

Given \( U=\{1,2,3,4,5,6,7,8,9\}, A=\{1,2,3,4\}, B=\{2,4,6\}, C=\{1,3,6,9\} \) Find \( n(U) \)