Question

calculati prin suma gaus 1+2+3+....+60 va roog​

Answer 1

S=60x61/2
S=30x61
S=1830

Answer 2

$\underline{\text{Suma lui Gauss}}\\ \\ 1+2+3+...+n = \dfrac{n\cdot (n+1)}{2} \\ \\ \\ \underline{\textbf{Rezolvare:}}\\\\ 1+2+3+...+60 = \dfrac{60\cdot (60+1)}{2}=\dfrac{60\cdot 61}{2} = \\ \\ =30\cdot 61 = 1830$