## Question 1
What is the maximum depth of the following tree?

root = [1, 2, 3, 4, 5]

```text
     1
    / \
   2   3
  / \ 
 4   5 
```
### Options

1. 7
Incorrect

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

2. 3
Correct
Starting from root **1**, move to node **2**. Then, either move to the node **4** or **5** as both are on the same level and are leaf nodes. 


Therefore, the maximum depth of the tree is **3**.
----------------------------

3. 2
Incorrect

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

4. 4
Incorrect

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

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## Question 2
What is the maximum depth of the following tree?

root = [3, 2]
```text
     3
    / 
   2  
```
### Options

1. 2
Correct
Starting from root **3**, move to node **2** since this is the only node left and is also a leaf node.

Therefore, the maximum depth of the tree is **2**.
----------------------------

2. 1
Incorrect

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

3. 3
Incorrect

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

4. 0
Incorrect

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

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

## Question 3
Which tree has the greater maximum depth?

A = [1, 2, 5, 3, 4, 7, 9]

B = [6, 3, NULL, 4, NULL, 7]

```text
     Tree A             Tree B
        1                 6
       /  \              /
     2     5            3 
    / \   /  \         / 
   3   4 7    9       4
                     /
                    7
``` 
### Options

1. Tree A
Incorrect

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

2. Tree B
Correct
The maximum depth of tree B is **4**,  whereas tree A has a maximum depth of **3**. 
----------------------------

3. Both have the same height.
Incorrect

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

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