The sum is equal to

- a)1
- b)3/4
- c)4/3
- d)None of these

Correct answer is option 'B'. Can you explain this answer?

Related Test: Test: Sequences And Series (Competition Level) - 1

9 Answers

Agam Gupta
answered
Jun 29, 2020

Expand r2-1=(r+1)(r-1)

then write numerator 1 as( r+1)-(r-1)

and multiply both numerator and denominator by 2

then write numerator 1 as( r+1)-(r-1)

and multiply both numerator and denominator by 2

This discussion on The sumis equal toa)1b)3/4c)4/3d)None of theseCorrect answer is option 'B'. Can you explain this answer? is done on EduRev Study Group by JEE Students. The Questions and
Answers of The sumis equal toa)1b)3/4c)4/3d)None of theseCorrect answer is option 'B'. Can you explain this answer? are solved by group of students and teacher of JEE, which is also the largest student
community of JEE. If the answer is not available please wait for a while and a community member will probably answer this
soon. You can study other questions, MCQs, videos and tests for JEE on EduRev and even discuss your questions like
The sumis equal toa)1b)3/4c)4/3d)None of theseCorrect answer is option 'B'. Can you explain this answer? over here on EduRev! Apart from being the largest JEE community, EduRev has the largest solved
Question bank for JEE.

Ask a question

Upgrade to Infinity