Question

if a,ar2,ar3,..... be in gp find the common ratio​

Answer 1

Step-by-step explanation:

I think that one term is missing in the given series it should be ar

Hence the series will be\\ [tex] \: a, \: a {r}\: a {r}^{2}, \: ar ^{3},.... [/tex] if it is so then

$\because \: a, \: a {r}, \: a {r}^{2}, \: ar ^{3}, \: are \: in \: gp \\ \therefore \: common \: ratio \: r \: = \frac{ a r}{a} \: = r$