Arithmetic Progressions
> Question
MCQ
1 mark
Year: 2020
Easy
CBSE Class 10
arithmetic-progressions
common-difference
Question
The common difference of an AP, whose
n
t
h
term is
a
n
=
(
3
n
+
7
)
, is
Solution
1
a
n
=
3
n
+
7
.
d
=
a
2
−
a
1
=
(
3
(
2
)
+
7
)
−
(
3
(
1
)
+
7
)
=
13
−
10
=
3
+1 mark
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