[math]\frac{3}{1!+2!+3!}+\frac{4}{2!+3!+4!}+...+\frac{k+2}{k!+\left(k+1\right)!+\left(k+2\right)!}+...+\frac{2029}{2027!+2028!+2029!}=[/math][br][right]Forrás: [url=https://mail.google.com/mail/u/0/#inbox/FMfcgzQdzmbdmpvxcGgDzJNwnjWBTDvc]Quora[/url][/right]

[url=https://www.geogebra.org/m/m2avgp8g]1)[/url][br][url=https://www.geogebra.org/m/pqcta6qh]2)[/url][br][url=https://www.geogebra.org/m/kgra8dwv]3)[/url][br][url=https://www.geogebra.org/m/ydsnwcbj]4)[/url][br][url=https://www.geogebra.org/m/m2avgp8g]5)[/url][br][url=https://www.geogebra.org/m/rzdcwued]6)[/url][br]