Cómo sumar números consecutivos

Posted by Arturo Tena on Jul 18, 2006 in General | Subscribe

Para sumar los números consecutivos desde i hasta f:

(f-i+1)*(f+i)/2

donde:

i = número inicial
f = número final

Referencia: http://redescolar.ilce.edu.mx/redescolar/act_permanentes/mate/anecdotas/mate4q.htm

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