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CBSE XI
>>
Math
>>
Sequences and Series
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Q)
Find the sum of
n
terms of the series whose
n
t
h
term is given by
n
2
+
2
n
.
n
(
n
+
1
)
(
2
n
+
1
)
6
+
2.
(
2
n
−
1
)
n
(
n
+
1
)
(
2
n
+
1
)
6
+
2.
(
2
n
−
1
−
1
)
n
(
n
+
1
)
(
2
n
+
1
)
6
+
.
(
2
n
+
1
−
1
)
n
(
n
+
1
)
(
2
n
+
1
)
6
+
.
(
2
n
−
1
)
Share
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