Which method returns the primitive value of a Number object?

How do you format a number to two decimal places?

A). toFixed(2)

B). toExponential(2)

C). toPrecision(2)

D). toString(2)

What does Number.isInteger(123.45) return?

A). 1

B). 0

C). NaN

D). undefined

What is the result of parseInt('0xF', 16)?

A). 15

B). 0

C). NaN

D). 16

What does the method parseInt('10.5') return?

A). 5

B). 11

C). 10

D). NaN

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

A). isNaN()

B). isFinite()

C). Number()

D). toFixed()

What does isFinite(123) return?

A). 1

B). 0

C). NaN

D). undefined

Which method converts a number to a string?

A). toFixed()

B). toString()

C). valueOf()

D). parseFloat()

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

A). 1

B). 0

C). NaN

D). undefined

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

A). 1

B). 0

C). NaN

D). undefined

What does Number('123abc') return?

A). 123

B). NaN

C). 123abc

D). undefined