Repedeee! plsss Calculati ratia unei progresii aritmetice cu a2=5 si a3=2 2) Calculati a8 daca ratia r= , a1=3 3) r=8 ,a8=10 calculati a12 4) a1=5 ,a6=23 calculati r=? 5) a1=2 ,a30=102 calculati a1+a2+-------a30​