Question

Calculati suma tuturor numerelor care anpartite la 5 dau cat 6

Answer 1

$a:5=6,r=\ \textgreater \ a=30+r$
$0 \leq r\ \textless \ 5(teorema)$
$a=(30,31,32,33,34)$
$S=30+31+32+33+34=160$