Which method returns the primitive value of a Number object?

What does Number('123') return?

A). 123

B). 123

C). NaN

D). 23

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

A). 1

B). 0

C). NaN

D). undefined

How do you format a number to two decimal places?

A). toFixed(2)

B). toExponential(2)

C). toPrecision(2)

D). toString(2)

What does toPrecision(3) do?

A). Formats a number to 3 decimal places

B). Returns a number in exponential notation

C). Returns a string with a number written with a specified length

D). Converts a number to a string

What does Number.isInteger(123.45) return?

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()

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

A). 5

B). 11

C). 10

D). NaN

What does Number('123abc') return?

A). 123

B). NaN

C). 123abc

D). undefined

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

A). isNaN()

B). isFinite()

C). Number()

D). toFixed()

Which method returns a number in exponential notation?

A). toFixed()

B). toExponential()

C). toPrecision()

D). toString()