Find the value

$625^{\frac{3}{4}}$

Find three different irrational numbers lying between $\sqrt{3}$ and $\sqrt{5}$.

Insert a rational number and an irrational number between the following:

$6.375289$ and $6.375738$

Simplify the following:

$3 \sqrt{3}+2 \sqrt{27}+\frac{7}{\sqrt{3}}$

Write the following in decimal form and state what kind of decimal expansion each has

$\frac{121}{400}$

Fill in the blanks so as to make each of the following statements true (Final answer only)

The decimal expansion of $\frac{2}{3}$ is of $\ldots \ldots .$ type.