JEE Main 2022MathematicsSequences and SeriesHardMCQ

JEE Main 2022Sequences and Series Question with Solution

JEE Main 2022 (29 Jun Shift 2)

Question

The sum of the infinite series 1+56+1262+2263+3564+5165+7066+ is equal to:

Choose an option

Show full solutionCorrect option: C
Correct answer
C288125

Step-by-step explanation

Given,

S=1+56+1262+2263+3564+. (i)

Multiplying with 16 both side

S6=16+562+1263+2264+ (ii)

On subtraction equation (i) - equation (ii)

We get, 56S=1+46+762+1063+1364+(iii)

Again multiplying 16 both side,

536S=1+462+763+1064+1365+...(iv)

On subtraction equation (iii) - equation (iv)

2536S=1+36+362+363+=85

S=288125

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About this question

This is a previous-year question from JEE Main 2022, covering the Sequences and Series chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.