Question 65
Find the largest number $N$ so that
$$
\sum_{n=5}^{N} \frac{1}{n(n-2)} \lt \frac{1}{4}
$$
$$
\sum_{n=5}^{N} \frac{1}{n(n-2)} \lt \frac{1}{4}
$$
MathNet 2026 — Part 07 Question 65
Math Olympiad Vault · MathNet 2026 — Part 07
Math Olympiad Vault · MathNet 2026 — Part 07