[" (12) If "sum(n=1)^(5)(1)/(n(n+1)(n+2)...

[" (12) If "sum_(n=1)^(5)(1)/(n(n+1)(n+2)(n+3))=(k)/(3)" then "k=],[" (A) "(17)/(105)" (B) "(19)/(112)" (C) "(55)/(336)" (D) "(1)/(6)]

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If sum_(n=1)^(5)(1)/(n(n+1)(n+2)(n+3))=(k)/(3), then k is equal to :-

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