Find the LCM of 5, 3m, and 20.

The given terms are ୫ (5), $3m$, and ୨୦ (20). The question asks for the ଲ.ସା.ଗୁ. (L.C.M.), which stands for Least Common Multiple.

The numerical coefficients are 5, 3, and 20.
Prime factorization of each number:
$5 = 5^1$
$3 = 3^1$
$20 = 2^2 \times 5^1$

To find the LCM, we take the highest power of all prime factors present:
$\text{LCM}(5, 3, 20) = 2^2 \times 3^1 \times 5^1 = 4 \times 3 \times 5 = 60$.

The variable present in the terms is $m$.
Therefore, the LCM of 5, $3m$, and 20 is the numerical LCM multiplied by the variable.

The LCM is $60m$.