Let A={1,2,3,…,40} and R be an equivalence relation on A×A defined by (a,b)R(c,d) if and only if ad=bc. If n is the number of elements in the equivalence class [(1,3)] and m is the number of elements in the equivalence class [(1,4)], then the value of m+n is

Let A={1,2,3,…,40} and R be an equivalence relation on A×A defined

1.	Let A={1,2,3,…,40} and R be an equivalence relation on A×A defined by (a,b)R(c,d) if and only if ad=bc. If n is the number of elements in the equivalence class [(1,3)] and m is the number of elements in the equivalence class [(1,4)], then the value of m+n is
Answer» Let $A = {1, 2, 3, \dots, 40}$ and $R$ be an equivalence relation on $A \times A$ defined by $(a, b) R (c, d)$ if and only if $a d = b c .$ If $n$ is the number of elements in the equivalence class $[(1, 3)]$ and $m$ is the number of elements in the equivalence class $[(1, 4)],$ then the value of $m + n$ is