Question

A- Assinale com um X as seqüências que são P.A..

1) (7, 9, 11, 12, 13)

2) (-10, -7, -4, -1, ...)

3) (2, 2, 2, 2, ...)

4) ( 1/2 , 1, 3/2, 2, 5/2, 3)

5) (1, 2, 3, 2, 1)

6) (x, x + 1, X + 2, X + 3, x + 4)

7) (x – 2r, x – r, x, x + r)

8) 2x, 3x, 4x, 5x)

9) 2, 6,12, 16)

10) (2, 5,11,23)​

Answer 1

Resposta:

eu acho que e a 9 (2,6,12,16)