Find `5(1)/(6)-:(9)/(2)`

Find (1)/(5)-:(1)/(6)

Find 9-:(2)/(5)

1+(1)/(2). (3)/(5) + (1.3)/(2.4) . (9)/(25)+(1.3.5)/(2.4.6).(27)/(125)+…...oo=

(1)/(2.3)+(1)/(4.5)+(1)/(6.7)+(1)/(8.9)+...

Find: 5"" 1/6div9/2

Prove that : Find the sum of the infinite series 1+(2)/(3).(1)/(2)+(2.5)/(3.6)((1)/(2))^(2)+(2.5.8)/(3.6.9)((1)/(2))^(3)+......oo

If x=(1.3)/(3.6)+(1.3.5)/(3.6.9)+(1.3.5.7)/(3.6.9.12)+.... then prove that 9x^(2)+24x=11 .

If x = (1*3)/(3*6)+(1*3*5)/(3*6*9)+(1*3*5*7)/(3*6*9*12)+. . . to infinite terms, then 9x^(2) + 24 x =

Find the sum of the infinite series 1+(1)/(3)+(1.3)/(3.6)+(1.3.5)/(3.6.9)+….