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For the series, S=1+1/((1+3))(1+2)^2+1/(...

For the series, `S=1+1/((1+3))(1+2)^2+1/((1+3+5))(1+2+3)^2+1/((1+3+5+7))(1+2+3+4)^2` +... 7th term is 16 7th term is 18 Sum of first 10 terms is `(505)/4` Sum of first 10 terms is `(45)/4`

A

`7^(th)` term is 16

B

`7^(th)` term is 18

C

sum of first 10 term is `505/4`

D

sum of first `10` term is `405/4`

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A
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