a
.
8
,
12
,
16
,
20
,
.
.
.
____________________
____________________
b
.
3
,
9
,
27
,
81
,
.
.
.
____________________
____________________
____________________
c
.
5
,
2
,
-
1
,
-
4
,
.
.
.
____________________
____________________
d
.
1
,
½
,
0
,
-
½
,
.
.
.
____________________
____________________
/
____________________
e
.
3
,
1
,
1
/
3
,
.
.
.
____________________
____________________
3
