1. What is the result of the following code: 'let numbers = [1, 2, 3]; numbers[5] = 5; console.log(numbers.length);'

• 3
• 4
• 5
• 6

2. What is an array in JavaScript?

• A special data type for storing only numbers
• A collection of variables with the same data type
• A data structure for storing and organizing multiple values
• A reserved keyword for defining functions

3. How can you check if a specific element is present in an array in JavaScript?

• Using the 'exists()' method
• By comparing each element using a loop
• By using the 'contains()' method
• By using the 'includes()' method

4. How do you declare an array in JavaScript?

• array myArray = []
• let myArray = {}
• var myArray = new Array()
• let myArray = []

5. What is the index of the first element in an array in JavaScript?

• 0
• 1
• -1
• null

6. Which method is used to add elements to the end of an array in JavaScript?

• push()
• append()
• add()
• insert()

7. Which method is used to remove elements from a specific index in an array in JavaScript?

• delete()
• remove()
• splice()
• cut()

8. How can you access an element in an array in JavaScript?

• By using the index of the element
• By using the 'get' keyword
• By using the element's value
• By using the 'access' keyword

9. What is the purpose of the 'pop()' method in JavaScript?

• To remove the first element of an array
• To remove the last element of an array
• To add an element to the end of an array
• To find the index of an element in an array

10. How do you find the length of an array in JavaScript?

• lengthOf()
• size()
• count()
• length