Section $1\mathrm{.}2$ Three Basic Concepts $($Pages $28-30)$

$5.(2$ points$)$ Section $1\mathrm{.}2$ Question $1$:

How many substrings aab are in $w{w}^{R}w,$ where $w=$aabbab $?$

$6.(1$ point$)$ Section $1\mathrm{.}2$ Question $8$:

$**$ Are there languages for which $\frac{?}{\text{b}\text{a}\text{r}}(L^{**})=(\frac{?}{\text{b}\text{a}\text{r}}(L){)}^{**}?$