VITEEE 2015 Paper

Section: Mathematics

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Question : 82 of 120

Marks: +1, -0

If Δ(r) = |

r	r3
1	n(n+1)

| , then

n

Σ

r=1

Δ(r) is equal to

n
Σ
r=1
r2
n
Σ
r=1
r3
n
Σ
r=1
r
n
Σ
r=1
r4

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