question_answer

Let R be a relation defined on the set of natural number N as \[\mathbf{R}=\left\{ \left( \mathbf{x},\mathbf{y} \right):\mathbf{x}\in \mathbf{N},\mathbf{y}\in \mathbf{N},\mathbf{2x}+\mathbf{y}=\mathbf{41} \right\}\], Then

A) Domain of \[R=\left\{ 1,1,3,4,5.....19,20 \right\}\]      

B) Range of \[R=\{39,37,35,.......7,5,3,3.)\]

C) R is reflexive 

D) R is symmetric