Let $\mathrm{A}=\{2,3,5,7,9\}$. Let R be the relation on A defined by $x \mathrm{R} y$ if and only if $2 x \leq 3 y$. Let $l$ be the number of elements in R , and m be the minimum number of elements required to be added in R to make it a symmetric relation. Then $l+\mathrm{m}$ is equal to :
