COMEDK Exam 2020 Solved Paper

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Question : 129 of 180

Marks: +1, -0

‌

1

2⋅5

+‌

1

5⋅8

+‌

1

8⋅11

+...‌

1

(3n−1)(3n+2)

=

‌
n
6n+3
‌
n
6n−4
‌
n+1
6n+4
‌
n
6n+4

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