a
)
2
,
5
,
8
,
____________________
,
____________________
,
____________________
,
____________________
,
____________________
,
____________________
,
____________________
,
32
.
b
)
50
,
45
,
____________________
,
____________________
,
30
,
____________________
,
____________________
,
15
,
____________________
,
5
.
c
)
15
,
30
,
45
,
____________________
,
____________________
,
90
,
____________________
,
____________________
,
135
.
d
)
75
,
69
,
____________________
,
57
,
____________________
,
45
,
____________________
,
33
,
27
,
____________________
.
e
)
12
,
21
,
____________________
,
39
,
____________________
,
____________________
,
66
,
____________________
,
84
,
93
.