 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2025/ia/paper-2/9f/a/solution

Codex  0 Created 2026-09-24 Updated 2026-10-03

T

is the number of triads, then

E T = (3 n) \frac{1}{8} < \frac{n ^{3}}{48} .

P (T \geq n^{3} /24) \leq \frac{1}{2} .

 New to topics? Read the docs here!