Question

If $A=\{1,2,3\},B=\{4,5,6\},$ then $A\cup B=$

• A. $\{1,2,3,4,5,6\}$
• B. $\{1,2,3\}$
• C. $\{4,5,6\}$

Answer 1

The correct option is A $\{1,2,3,4,5,6\}$

Given: $A=\{1,2,3\};B=\{4,5,6\}$
Now, $A\cup B$ will give a set having elements from the set $A$ or $B.$
$\Rightarrow A\cup B=\{1,2,3,4,5,6\}$