Sum of infinite terms of series `3 + 5. 1/4 + 7. 1/4^2 + .... ` is

Sum of infinite terms of the series 1 + 4/7 + (9)/(7^2) + (16)/(7^3) + (25)/(7^4) +……, is

Sum of infinite terms of the series cot^(-1) ( 1^(2) + 3/4) + cot^(-1) ( 2^(2) + 3/4) + cot^(-1) ( 3^(2) + 3/4) + ... is

If the sum of infinite terms of a series p,1,(1)/(p)... is (25)/(4) .Find the value of p

Sum of the first 18 terms of the series 1+4+7+......

Sum of the first 18 terms of the series 1+4+7+......

FInd the sum of infinite terms of the series (1)/(1.2.3)+(1)/(2.3.4)+(1)/(3.4.5)....

Find sum to n terms of the series 3+5X(1)/(4)+7X(1)/(4^(2))+...