`(9)/(10)+(3)/(11)+(7)/(15)=?`

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)

If (10)^(9)+2(11)^(1)(10)^(8)+3(11)^(2)(10)^(7)+........+(10)(11)^(9)=k(10)^(9) , then k is equal to

If (10)^(9)+2(11)^(1)(10)^(8)+3(11)^(2)(10)^(7)+..........+10(11)^(9)=k(10)^(9), then k is equal to:

If (10)^(9)+2(11)^(1)(10)^(8)+3(11)^(2)(10)^(7)+"........"+(10)(11)^(9)=k(10)^(9) , then k is equal to

If 10^(9)+2(11)^(1)(10)^(8)+3(11)^(2)(10)^(7)+...+10(11)^(9)=k(10)^(9) , then k is equal to -

If (10)^(9)+2(11)^(1)+(10)^(8)+3(11)^(2)(10)^(7)+…+10(11)^(9)=k(10)^(9) then k is equal to

If (10)^(9) + 2(11)^(1) (10)^(8) + 3(11)^(2) (10)^(7) + …. + 10(11)^(9) = k(10)^(9) , then k is equal to