Question

entre o numero 197 e 504 determinar a) quanto multiplos de 5 existe b)qual a soma desses multiplos

Answer 1

(200,205,210,215,220,225,230,235,240,245,250,255,260,265,270,275,280,285,290,295,300,305,310,315,320,325,330,335,340,345,350,355,360,365,370,375,380,385,390,395,400,405,410,415,420,425,430,435,440,445,450,455,460,465,470,475,480,485,490,495,500)
agora basta vc contar quantos tem e somar !

Answer 2

resolução!

an = a1 + ( n - 1 ) r

500 = 200 + ( n - 1 ) 5

500 = 200 + 5n - 5

500 = 195 + 5n

500 - 195 = 5n

305 = 5n

n = 305/5

n = 61

Sn = ( a1 + an ) n / 2

Sn = ( 200 + 500 ) 61 / 2

Sn = 700 * 61 / 2

Sn = 350 * 61

Sn = 21350