Tính: \[ F = \frac{1}{2.3} + \frac{1}{6.5} + \frac{1}{10.7} + \frac{1}{14.9} + \ldots + \frac{1}{198.101} \]

----- Nội dung ảnh -----
\[ F = \frac{1}{2.3} + \frac{1}{6.5} + \frac{1}{10.7} + \frac{1}{14.9} + \ldots + \frac{1}{198.101} \]