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Can anyone please tell me this sum which is attached below

Can anyone please tell me this sum which is attached below

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Grade:12th pass

1 Answers

Sandeep Bhamoo
443 Points
3 years ago
The sum of the above limit is 2÷{(a+1)(2a+1)} which is equal to 1÷60 hence (a+1)(2a+1)= 120 on solving. a= -17/2 that is the fourth option please do approve my answer if correct

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