Question

calcular o n° de termos da P.A.(3,6,9,....1002)​

Answer 1

an = a1 + ( n -1) .r

1002 = 3 + ( n - 1 ) . (6-3)

1002 = 3 + ( n - 1 ) . 3

1002 = 3 + 3n - 3

1002 = 3n

1002/3= n

n= 334