## Question 1
What is the output if the following array of heights is given as input?

heights = [1, 2, 5, 7, 3, 9]

```shell
          |-|
          |-|
      |-| |-|
      |-| |-|
    |-|-| |-|
    |-|-| |-|
    |-|-|-|-|
  |-|-|-|-|-|
|-|-|-|-|-|-|
 1 2 5 7 3 9
```

### Options

1. 21
Incorrect

----------------------------

2. 27
Incorrect

----------------------------

3. 10
Incorrect

----------------------------

4. 12
Correct
height = $3$\
width = $4$\
The area of the largest rectangle will be $3 \times 4 = 12$.
----------------------------

---------------------------------------------

## Question 2
What is the output if the following array of heights is given as input?

heights = [2, 5, 3, 6, 7, 7, 5]

```shell    
        |-|-|
      |-|-|-|
  |-| |-|-|-|-|
  |-| |-|-|-|-|
  |-|-|-|-|-|-|
|-|-|-|-|-|-|-|
|-|-|-|-|-|-|-|
 2 5 3 6 7 7 5
```

### Options

1. 20
Correct
height = $5$\
width = $4$\
The area of the largest rectangle will be $5 \times 4 = 20$.
----------------------------

2. 14
Incorrect

----------------------------

3. 25
Incorrect

----------------------------

4. 18
Incorrect

----------------------------

---------------------------------------------

## Question 3
What is the output if the following array of heights is given as input?

heights = [4, 1, 9, 2]

```shell
    |-| 
    |-|
    |-|
    |-|  
    |-|
|-| |-|  
|-| |-|  
|-| |-|-| 
|-|-|-|-| 
 4 1 9 2 
```

### Options

1. 18
Incorrect

----------------------------

2. 16
Incorrect

----------------------------

3. 9
Correct
height = $9$\
width = $1$\
The area of the largest rectangle will be $9 \times 1 = 9$.
----------------------------

4. 24
Incorrect

----------------------------

---------------------------------------------