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Byju's Answer
Standard XII
Mathematics
Combination
lim n →∞∑ k =...
Question
l
i
m
n
→
∞
∑
n
k
=
1
k
3
+
6
k
2
+
11
k
+
5
(
k
+
3
)
!
=
A
2
3
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B
1
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C
5
3
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D
7
3
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Solution
The correct option is
C
5
3
k
3
+
6
k
2
+
11
k
+
5
=
(
k
+
1
)
(
k
+
2
)
(
k
+
3
)
−
1
∴
k
3
+
6
k
2
+
11
k
+
5
(
k
+
3
)
!
=
1
k
!
−
1
(
k
+
3
)
!
T
h
e
r
e
f
o
r
e
v
a
l
u
e
i
s
5
/
3.
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2
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