Exponents and P...

Compare the folllowing:

The value of $${ \left[ { \left( { 3 }^{ 2 } \right)  }^{ 2 } \right]  }^{ -1 }$$ is-

The thickness of paper is $$0.004\ m$$  and that of another paper is $$0.008\ m$$. Compare their sizes.

$$For \ a \  natural \  number \  n , \  2n(n-1)!\leqslant  n^n, if$$:

The value of $$(-2)^{-5}$$

The value of $$(-3)^{-4}$$ is 

The value of $$\left(\dfrac{2}{5}\right)^{-3}$$ is 

Mark tick against the correct answer in each of the following:
$$(1/2)^{-2} +(1/3)^{-2} + (1/4)^{-2}=$$?

$$\left( \dfrac { 1 }{ 2 }  \right) ^{ -2 }+\quad \left( \dfrac { 1 }{ 3 }  \right) ^{ -2 }+\left( \dfrac { 1 }{ 4 }  \right) ^{ -2 }$$

Mark tick against the correct answer in each of the following:
$$\left\{6^{-1} +(3/2)^{-1}\right\}^{-1}$$