JavaScript and Python Quiz Challenge

What is the data type of `null` in JavaScript?

• Object

• Undefined

• Null

• Boolean

Which of the following is a mutable data type in Python?

• Tuple

• String

• List

• Integer

What is the output of the following JavaScript code? ```javascript console.log(typeof 42); ```

• "number"

• "string"

• "object"

• "undefined"

Which Python control structure is used to iterate over a sequence?

• If-else

• For loop

• While loop

• Switch-case

What is the purpose of the `return` statement in a JavaScript function?

• To define a function

• To exit a function and return a value

• To declare a variable

• To call a function

Which of the following is a valid list comprehension in Python to create a list of squares of numbers from 0 to 4?

• `[x^2 for x in range(5)]`

• `[x**2 for x in range(5)]`

• `[x*2 for x in range(5)]`

• `[x**2 for x in range(1,5)]`

What will be the output of the following JavaScript code? ```javascript function greet() { return "Hello, World!"; } console.log(greet()); ```

• Hello, World!

• undefined

• greet

• Error

In Python, what will be the output of the following code? ```python for i in range(3): if i == 1: continue print(i) ```

• 0 1 2

• 0 2

• 1 2

• 0 1

Which of the following is a correct way to define a function in JavaScript?

• `function myFunction() {}`

• `def myFunction() {}`

• `function: myFunction() {}`

• `myFunction() => {}`

What is the result of the following Python list comprehension? ```python [x for x in range(5) if x % 2 == 0] ```

• [0, 1, 2, 3, 4]

• [0, 2, 4]

• [1, 3, 5]

• [2, 4]