What is the value of S=1/(3 times 7 time...

What is the value of `S=1/(3 times 7 times 5)+1/(1 times 4) +1/(3 times 5 times 7)+1/(4 times 7)+1/(5 times 7 times 9) +1/(7 times 10)+……..` up to 20 terms , then what is the value of S?

A

6179/15275

B

6070/ 14973

C

7191/15174

D

5183/16423

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2017 TIER-II PAPER(13)
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