Question 121
Let $S$ denote the set of all triples $(i, j, k)$ of positive integers where $i + j + k = 17$. Compute
$$
\sum_{(i, j, k) \in S} i j k.
$$
$$
\sum_{(i, j, k) \in S} i j k.
$$
MathNet 2007-part-03 — 185 problems (EN–VI) Question 121
Math Olympiad Vault · MathNet 2007-part-03 — 185 problems (EN–VI)