The sum of positive terms of the series `10+9(4/7)+9(1/7)+.......`

The sum to n terms of the series 4/3 + 10/9 + 28/27 + ……. is

Find the sum of infinite terms of the series : (3)/(2.4) + (5)/(1.4.6) + (7)/(2.4.6.8)+ (9)/(2.4.6.8.10)+……

Find the sum of first n terms and the sum of first 5 terms of the geometric series 1+2/3+4/9+......

The sum of the first 10 terms of the series (5)/(1.2.3)+(7)/(2.3.9)+(9)/(3.4.27)+….. is

The sum of the first 10 terms of the series (5)/(1.2.3)+(7)/(2.3.9)+(9)/(3.4.27)+….. is

Find the nth term and then the sum to n terms of the series 3.5 +4.7+ 5.9 +....

Find the sum of 7 terms of the series (16)/(27)-(8)/(9)+(4)/(3)- ….