Answer:
Common ratio is
3
Explanation:
Sequence :
5
,
15
,
45
,
135
,
...
...
.
a
1
=
5
,
a
2
=
15
,
a
3
=
45
,
a
4
=
135
,
...
...
.
a
2
a
1
=
15
5
=
3
,
a
3
a
2
=
45
15
=
3
,
a
4
a
3
=
135
45
=
3
,
...
.
.
In this sequence the ratio of each term and the previous term is
constant , so it is geometric sequnce and constant is
3
.
Common ratio is
3
[Ans]