The value of `[(5/6)^(1/5)]^(-1/6)` is

(B) 1/[(5/6)^^1/5]^^1/6

Find the value of [ 5 1/6 ]^( -3/4 ) is

if a=(5+2sqrt(6))^(2001) and b=(5-2sqrt(6))^(2001) then the value of (a+1)^(-1)+(b+1)^(-1) is

If a + (1)/(a) = sqrt5, then the value of a ^(6) + (1)/(a ^(6)) is

The value of [(5^(-1)-6^(-1))^(-1)-(3^(-1)-4^(-1))^(-1)] is

The value of (1)/(6)+(1)/(12)+(1)/(20)+...(1)/(90) is (A) (1)/(5) (B) (2)/(5)(C)(3)/(5) (D) None of these

The value of (1)/(6)+(1)/(12)+(1)/(20)+......+(1)/(90) is: (A) (1)/(5)(B)(2)/(5)(C)(3)/(5) ( textrmD ) none of these

The value of (1)/(6)+(1)/(12)+(1)/(20)......+(1)/(90) is a.(1)/(5) b.(2)/(5) c.(3)/(5)d .none of these

The value of [(1)/(3)]^(-1)-((1)/(4))^(-7)}+[((1)/(4))^(-1)-((1)/(5))^(-1)]+[((1)/(5))^(-1)-((1)/(6))^(-1)]^(2)] is