Let $\mathrm{A}=\{2,3,5,7,9\}$. Let R be the relation on A defined by x Ry if and only if $2 \mathrm{x} \leq 3 \mathrm{y}$. Let $\ell$ 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 $\ell+\mathrm{m}$ is equal to: