Question

Let $R$ be a relation on $N$ defined by $x+2y=8$. The domain of $R$ is

• A. $\{2,4,8\}$
• B. $\{2,4,6,8\}$
• C. $\{2,4,6\}$
• D. $\{1,2,3,4\}$

Answer 1

The correct option is C $\{2,4,6\}$

R is Relation

$R=(x,y)$

$x+2y=8$

$R=\left\{\right(6,1);(4,2);(2,3\left)\right\}$

$\therefore$ Domain of set

$=\{6,4,2\}$