(1/1.3)+(1/3.5)+(1/5.7)+.....(n-3) terms

Question

(1/1.3)+(1/3.5)+(1/5.7)+.....(n-3) terms (A) (n/n+2) (B) (n+1/n(n+5)) (C) (n -3/2n-5) (D) (n-1/n(2n-3))

Tardigrade Admin · Accepted Answer

Put n - 3 = , S = (1/1.3) = (1/3)

Q. $\frac{1}{1.3} + \frac{1}{3.5} + \frac{1}{5.7} + ..... (n - 3)$ terms