Let S_k = (1+2+3+…+k)/k. If S_1^2 + S_2^2 + … + S_10^2 = 5/12A, then A is equal to

Let S_k = (1+2+3+…+k)/k. If S_1^2 + S_2^2 + … + S_10^2 =… — JEE Main 2019 Mathematics PYQ

JEE Main 2019 · 12 Jan · Shift I

Let

S_k = \frac{1+2+3+\ldots+k}{k}

. If

S_1^2 + S_2^2 + \ldots + S_{10}^2 = \frac{5}{12}A

, then

A

is equal to

Show answer

Correct option: D

[JEE Main 2019 · 12 Jan · Shift I]

Practise Sequences and Series the way it is asked

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