# (PART) A

# [Chapter 1](https://pzhao.org) {#cha1}

## Section 1.1 {#sec1.1}

$$f(k) = {n \choose k} p^{k} (1-p)^{n-k}$$

## Section 1.2 {#sec1.2}

$$\begin{array}{ccc}
x_{11} & x_{12} & x_{13}\\
x_{21} & x_{22} & x_{23}
\end{array}$$

# Chapter 2

## Section 2.1

- Item 1
- Item 2
  + Item 2.1
  * Item 2.2
  
## Section 2.2 

# (PART) B

# Chapter 3

# (APPENDIX) Appendix {-}

# a

# b
