\binom{30}{2} = \frac{30 \cdot 29}{2} = 435,\quad \binom{90}{3} = \frac{90 \cdot 89 \cdot 88}{6} = 117480,\quad \binom{120}{5} = \frac{120 \cdot 119 \cdot 118 \cdot 117 \cdot 116}{120} = 190578024

Sat, 02 May 2026 23:09:24 +0000

Content under review