Question

1. das sequencias a seguir, quais sao PA?a) (2,4,6,8,...)b) (4,10,1,2)c) (-4,-8,-12,-16,...)d) (-5,7,-8,1,...)e) (-11,-5,-5,-9,-4,...) 2 2f) (2,5,10,17,26,...)

Answer 1

A e C
razão de A = +2
razão de C = -4