Question

question
given:
set $a=\\{3,5,9,12\\}$
set $b=\\{1,2,3,4,7,9,11\\}$
what is the intersection of sets $a$ and $b$
answer attempt 1 out of 5
$\\{1,2,4,7,11\\}$
$\\{1,3,5,7,11,12\\}$
$\\{1,2,3,4,5,7,9,11,12\\}$
$\\{3,9\\}$
submit answer

Explanation:

Step1: Identify common elements

Find numbers present in both Set A and Set B.
Set $A = \{3,5,9,12\}$, Set $B = \{1,2,3,4,7,9,11\}$
Common elements: $3, 9$

Step2: Form the intersection set

The intersection $A \cap B$ is the set of common elements.
$A \cap B = \{3,9\}$

Answer:

$\{3,9\}$