JEE Main 9 April 2017 Paper Solved Paper

Section: Mathematics

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Question : 76 of 90

Marks: +1, -0

If

lim

n→∞

1a+2a+....+na

(n+1)a−1[(na+1)+(na+2)+...+(na+n)]

=

1

60

for some positive real number a, then a is equal to :

[Main 9 April 2017]

7
8
15
2
17
2

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