Question

P = 1 + 2 +3 + ... + 80 *

Answer 1

Respuesta:

  P = 3240

Explicación paso a paso:

P = 1 + 2 +3 + ... + 80

$P = 1+2+3+...+80= \frac{n(n+1)}{2}$

$Para; n =80$

$P = 1+2+3+...+80 = \frac{80( 80 + 1 ) }{2}$

$P = \frac{80(81 ) }{2} = \frac{6480}{2}$

P = 3240