## Question 1
(**Select all that apply.**) What is the output if the following array is given as an input?

arr = [1, 6, 2, 1, 2, 4, 7, 4]


### Options

1. [6, 2]
Incorrect

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

2. [6, 7]
Correct
The only two single numbers in the given array are 6 and 7.
----------------------------

3. [7, 6]
Correct
The only two single numbers in the given array are 6 and 7.
----------------------------

4. [1, 2, 4]
Incorrect

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

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

## Question 2
(**Select all that apply.**) What is the output if the following array is given as an input?

arr = [-1, -6, 2, 1, 2, 4, 7, 4, 1, 7]

**Select all that apply.**
### Options

1. [-6, 7]
Incorrect

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

2. [7, -6]
Incorrect

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

3. [-1, -6]
Correct
The only two single numbers in the given array are -1 and -6.
----------------------------

4. [-6, -1]
Correct
The only two single numbers in the given array are -1 and -6.
----------------------------

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

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

arr = [0, 1, 2, 3, 0, 1, 2, 3, 4, 5]

### Options

1. [0, 2]
Incorrect

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

2. [4, 5]
Correct
The only two single numbers in the given array are 4 and 5.
----------------------------

3. [1, 3]
Incorrect

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

4. [3, 5]
Incorrect

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

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