What is the value of $\frac{x^1\cdot x^2\cdot x^3\cdots x^{10}}{x^2\cdot x^4 \cdot x^6 \cdots x^{20}}$ if x = 2?
x^1.....x^10 is equal to x^55
x^2.....x^20 is equal to x^110
x^55/x^110=
x^-55
2^-55
:)
+201 
