User:Valley2city/sandbox

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My personal sandbox that hopefully won't get deleted.

6,952,747 ${\displaystyle \sum _{n=0}^{\infty }{\frac {x^{n}}{n!}}}$

${\displaystyle \Pr \left(\bigcap _{i=1}^{n}A_{i}\right)=\prod _{i=1}^{n}\Pr(A_{i})={1 \over 2^{n}}}$.gambler's fallacy