The 15th term of the series `2 1/2+1 7/(13)+1 1/9+(20)/(23)+..` is

The 15th term of the series 2 1/2+1 7/(13)+1 1/9+(20)/(23)+ i s (10)/(39) b. (10)/(21) c. (10)/(23) d. none of these

The rth term of the series 2(1/2)+1(7/13)+1(1/9)+20/23+..... is

The 5th term of the series (10)/(9),(1)/(3)sqrt((20)/(3)),(2)/(3),… is

Find the 99^(th) term of the series : 7 (3)/(4) , 9 (1)/(2) , 11(1)/(4) ,…….

99^(th) term of the series 2+7+14+23...

The n ^(th) terms of the series 1 + (4)/(5) + (7)/(5 ^(2)) + (10)/(5 ^(3)) +………. is

Find the 15^(th) term of the series 3 - 6 +9 - 12 + …

Find the n^(th) terms of the series 5 + 7 + 13 + 31 + …

Sum to n terms of the series 1^(3) - (1.5)^(3) +2^(3)-(2.5)^(3) +…. is

Find the n^(th) term of the series 2+(5)/(9)+(7)/(27) + …… . Hence find sum to n terms.