Question 22
Find the sum of the elements of the set
$$
M = \left\{ \frac{n}{2} + \frac{m}{5} \mid m, n = 0, 1, 2, \dots, 100 \right\}.
$$
$$
M = \left\{ \frac{n}{2} + \frac{m}{5} \mid m, n = 0, 1, 2, \dots, 100 \right\}.
$$
MathNet 2011 Question 22
Math Olympiad Vault · MathNet 2011