[" The sum of the series "],[(2)/(3)+(8)/(9)+(26)/(27)+(80)/(81)+...+" upto "n" terms,is "]

The sum of the series (2)/(3) + (8)/(9) + (26)/(27) + (80)/(81) + … to n terms is

The sum of the series (2)/(3)+(8)/(9)+(26)/(27)+(80)/(81)+ to n terms is n-(1)/(2)(3^(-n)-1)(b)n-(1)/(2)(1-3^(-n))(c)n+(1)/(2)(3^(n)-1)(d)n-(1)/(2)(3^(n)-1)

Find the nth term of the series (1)/(3) +(3)/(9) +(5)/(27) +(7)/(81)+ ...

The sum of the series 1+(4)/(3)+(10)/(9)+(28)/(27)+.... upto n terms is

Find the sum of the series (27)/(8) + (9)/(4) + (3)/(2) + … oo

Sum up the series (2)/(3) + (5)/(9) + (8)/(27)+(11)/(81) + ..... to n terms and hence find the sum to infinity . Sum up to infinity given that x lt numerically .

The sum of first n terms of the series (2)/(3)+(8)/(9)+(26)/(27)+...... is

The sum of the series 2/3+8/9+(26)/(27)+(80)/(81)+ to n terms is (a) n-1/2(3^(-n)-1) (b) n-1/2(1-3^(-n)) (c) n+1/2(3^n-1) (d) n-1/2(3^n-1)

The sum of first n terms of the series (4)/(3),(10)/(9),(28)/(27),(82)/(81),(244)/(243),... is