COMEDK Exam 2016 Solved Paper

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Question : 124 of 180

Marks: +1, -0

.If Sn=‌

1

6⋅11

+‌

1

11⋅16

+‌

1

16⋅21

+... to n terms then 6Sn=

‌
1
(5n+6)
‌
(2n−1)
5n+6
‌
n
(5n+6)
‌
5n−4
5n+6

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