1 из 30

$$\large{\begin{gather*}\normalsize\begin{array}{c|l}1 & \displaystyle{\color{#ff7800}\frac{\pi}{4}}=1-\frac{1}{3}+\frac{1}{5}-\frac{1}{7}+\ldots\\ \\2 & \displaystyle{\color{#ff7800}\ln{2}}=1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+\ldots\\ \\3 & \displaystyle{\color{#ff7800}e}=\frac{1}{0!}+\frac{1}{1!}+\frac{1}{2!}+\ldots\end{array}\end{gather*}}$$

. . .