Question

What is the common ratio of this geometric sequence?


1 80
2 40
3 20
4 10
5 5

A. -40
B. 0.5
C. 2
D. 40

Answer 1

hi,\[common \ ratio (r) = \frac{ second \ term }{ first \ term }\]

wt will be ur answer then ?

Answer 2

D?

Answer 3

\[\frac{ second \ term }{ first \ term } = \frac{ 40 }{80 }\]
Did u get it now?

Answer 4

now.... can u go for the answer ?

Answer 5

oooh so its C ?

Answer 6

nope...dr
\[\frac{ 40 }{ 80 } =\frac{ 4 }{8 } = \frac{ 1 }{ 2}\]
It cant be C

Answer 7

its 0.5

Answer 8

Thanks!

Answer 9

u r welcome!!