Which method returns the primitive value of a Number object?

Which method can convert a number to a different base (e.g., hexadecimal)?

A). toString()

B). parseInt()

C). toFixed()

D). valueOf()

What does (123.456).toFixed(1) return?

A). 4

B). 5

C). 45

D). 123

How do you format a number to two decimal places?

A). toFixed(2)

B). toExponential(2)

C). toPrecision(2)

D). toString(2)

What is the output of (255).toString(2)?

A). 255

B). 11111111

C). ff

D). 10

What does parseFloat('12.34abc') return?

A). 12

B). 34

C). NaN

D). undefined

What does Number('123abc') return?

A). 123

B). NaN

C). 123abc

D). undefined

What does Number.isNaN('123') return?

A). 1

B). 0

C). NaN

D). undefined

Which method would you use to check if a value is a finite number?

A). isNaN()

B). isFinite()

C). Number()

D). toFixed()

What is the result of isNaN('Hello')?

A). 1

B). 0

C). NaN

D). undefined

Which method converts a string to a floating point number?

A). parseFloat()

B). toFixed()

C). toPrecision()

D). Number()