Explicație pas cu pas:
[tex] \bf \dfrac{1}{2} \cdot \dfrac{2}{3} \cdot \dfrac{3}{4} \cdot \dfrac{4}{5} \cdot.... \cdot \dfrac{2004}{2005} = [/tex]
[tex] \bf \dfrac{1}{ \not2} \cdot \dfrac{\not2}{\not3} \cdot \dfrac{\not3}{\not4} \cdot \dfrac{\not4}{\not5} \cdot\not \: ....\not \: \: \cdot \dfrac{\not2004}{2005} = [/tex]
[tex] \bf \dfrac{1}{ 1} \cdot \dfrac{1}{1} \cdot \dfrac{1}{1} \cdot \dfrac{1}{1} \cdot .... \cdot \dfrac{1}{2005} = \red{\dfrac{1}{2005} }[/tex]
