If upto 20 terms, then what is the value of A? upto 20 terms A =

If upto 20 terms, then what is the value of A? upto 20 terms A =
| If upto 20 terms, then what is the value of A?

A. 379/308

B. 171/140

C. 379/310

D. 420/341

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Right Answer is: D

SOLUTION

upto 20 terms
A =
A =
A =
A =
A =
A =
A =
A =
A =