1.

Sum to n terms of the series (1)/(1.2.3)+(3)/(2.3.4)+(5)/(3.4.5)+(7)/(4.5.6)+…. is

Answer»

`(n(n+1))/(2(n+2)(n+3))`
`(n(3n+1))/(4(n+1)(n+2))`
`(1)/(6)-(5)/((n+1)(n+4))`
none of these

Answer :B


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