If set $A=\{1,2,3,4\}$ and $B=\{3,4,5,6\}$. Find $A-B$.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $\{1,2\}$
$A-B$ is the set of elements that belongs to A but not to B. Here, 1 and 2 belongs to A but not to B. So,
$A = \{1,2,3,4\}$
$B = \{3,4,5,6\}$
$A – B = \{1,2,3,4\} – \{3,4,5,6\} = \{1,2\}$.