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Mathematics
Mathematics
Problem
The first three terms of a sequence are
5
,
5
+
k
,
5
+
3
k
5,\;5+k,\;5+3k
5
,
5
+
k
,
5
+
3
k
. For which value(s) of
k
k
k
does this sequence form a geometric progression? a)
k
=
5
k=5
k
=
5
only b)
k
=
0
or
k
=
5
k=0\text{ or }k=5
k
=
0
or
k
=
5
c)
k
=
−
5
3
k=-\dfrac{5}{3}
k
=
−
3
5
d)
k
=
0
k=0
k
=
0
only
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