Question

Calcular a soma dos 60 primeiros números naturais.

Answer 1

Formula => $S= (A1 + An) \frac{n}{2} => S(60) = (1+60)* \frac{60}{2} => \\ \\ (1*30)*(60*30) = 1830$

Answer 2

$S(60) = (1 + 60) \frac{60}{2} = \\ (1 + 60)30 = \\ (1 . 30) + (60 . 30) = \\ 30 + 1800 = 1830$