Given the code: let y = 10; y = true;, what is the type of y after execution?

What will be the result of the following code: let z = '123'; z = Number(z); console.log(typeof z);?

A). string

B). number

C). undefined

D). boolean

Which operator is used to determine the type of a variable in JavaScript?

A). typeof

B). instanceof

C). type

D). isType

In JavaScript, what will be the type of a variable x after x = 5 + true;?

A). number

B). string

C). boolean

D). undefined

What will typeof null return in JavaScript?

A). null

B). undefined

C). object

D). number

What is the initial type of a variable declared with let a;?

A). null

B). number

C). undefined

D). object

What is the result of typeof [] in JavaScript?

A). array

B). object

C). list

D). undefined

What is the type of the value returned by JSON.parse('null')?

A). null

B). string

C). object

D). undefined

Which type conversion happens automatically in the expression 3 + '5'?

A). Number to String

B). String to Number

C). Boolean to String

D). Number to Boolean

Which of the following values is considered falsy in JavaScript?

A). 1

B). 0

C). 0

D). {}

What does the isNaN function do?

A). Checks if a value is not a number

B). Converts a value to a number

C). Checks if a value is a number

D). Converts a value to NaN