`(-5/9)^(5)times(-5/9)^(11)=(-5/9)^?`

-(2)/(9)times(9)/(5)times(5)/(2)times(7)/(5)

Find : (5/9)^(-2) times ( 9/5 )^(-3) times ( 3/5 )^0

(3^(5)times10^(5)times9)/((90)^(2))

((3)/(11)+(5)/(22))times((14)/(9)+(5)/(6))

Which of the following are in descending order of their values? (5)/(9),(7)/(11),(8)/(15),(11)/(17) (b) (5)/(9),(8)/(15),(11)/(17),(7)/(11) (c) (11)/(17),(7)/(11),(5)/(15),(5)/(9)(d)(11)/(17),(7)/(11),(5)/(9),(8)/(15)

Evaluate : ( -4/5 ) times ( 5/7 ) times ( -8/9 ) + 8/9 times 4/7

(9)/(7)times(3)/(5)+(8)/(7)-(9)/(7)times(10)/(9)

(5/9)^(-2) xx (9/5)^(-3) xx (9/10)^0

Simplify (5)/(11)+4(3)/(9)

(1)/(1times3)+(1)/(3times5)+(1)/(5times7)+(1)/(7times9)+(1)/(9times11)+(1)/(11times13)