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Mathematics
Mathematics
Problem
Which of the following sequences is NOT an arithmetic progression? a)
12
,
9
,
6
,
3
12,\;9,\;6,\;3
12
,
9
,
6
,
3
b)
2
,
5
,
9
,
13
2,\;5,\;9,\;13
2
,
5
,
9
,
13
c)
1
2
,
1
,
3
2
,
2
\dfrac12,\;1,\;\dfrac32,\;2
2
1
,
1
,
2
3
,
2
d)
3
,
3
,
3
,
3
3,\;3,\;3,\;3
3
,
3
,
3
,
3
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