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Byju's Answer
Other
Quantitative Aptitude
Series
The sum to 2 ...
Question
The sum to 2n terms of the series
5
3
+
4
×
6
3
+
7
3
+
4
×
8
3
+
9
3
.
.
.
.
.
is ?
A
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B
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C
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D
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Solution
The correct option is
C
At n=1
2n= 2
Sum to 2n terms = 125 + 864 = 989
Substitute n=1 in answer options. Only option c gives 989