Question

determine a soma dos 10 primeiros termos da PA 2, 5

Answer 1

Montemos a PA:

{2, 5, 8, 11, 14, 17, 20, 23, 26, 29}

2 + 5 + 8 = 15

11 + 14 + 17 = 42

20 + 23 = 43

26 + 29 = 55

55 + 15 = 70 + 42 + 43 = 155