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Question

limn1+2+.....+n1nn=0

A
12
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B
14
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C
13
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D
0 (zero)
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Solution

The correct option is C 13
Given : limn1+2........n1nn
limn1+2........n1nn=limnn2x1dxnn=limn23(n1)32nn1nn=limn23(11n)321n32=23[10]=23
Hence the correct answer is 23

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