Find the value of :
`(2frac{2}{3}).(2frac{1}{5})`

Find the value of (128)^-frac(2)(7)

Find the value of (1 + frac(1)(3))(1 + frac(1)(4))(1 + frac(1)(5))...(1 + frac(1)(n))

Find the values of frac(1)(2) + frac(1)(6) + frac(1)(20)+frac(1)(30)

Find the value of 3 frac(1)(4) div 5frac(1)(2)(1-frac(1)(4))

Find the value of (64)^(-2//3) xx (frac(1)(4))^-2

Find the coefficient of x^n in the expansion of (1+frac{x}{1!}+frac{x^2}{2!}+frac{x^3}{3!}+...+frac{x^n}{n!})^2 .

If (x^2 +frac(1)(x^2))=6 ,then find the value of (10x-frac(10)(x))

In the expansion of (frac{3}{2}+frac{x}{3})^n when x=frac{1}{2} , it is know that the 6th term is the greatest term. Find the possible positive integral values of n.

If frac(1)(3.718)=0.2689 ,find the value of frac(1)(0.003718)