Question

obter a razão de cada P.G .:
a- (5,15,45,...)
b- (-12,-3,0,75)
c- (1,2,4,8,16,...)
d- (-2,6,-18,54,...)
e- (5,-5,5,-5,5,...)
f - (80,40,20,10,5,...)

Answer 1

Basta dividir o elemento posterior pelo anterior
a) q=15/5 = 3
b) PG errada!
c) q= 2/1 = 2
d) q=6/-2 = -3
e) q= -5/5 = -1
f) q= 40/80 = 1/2