How do you format a number to two decimal places?

What does Number('123abc') return?

A). 123

B). NaN

C). 123abc

D). undefined

Which method returns the primitive value of a Number object?

A). toString()

B). valueOf()

C). toFixed()

D). parseFloat()

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

A). toString()

B). parseInt()

C). toFixed()

D). valueOf()

What does Number('123') return?

A). 123

B). 123

C). NaN

D). 23

What does parseInt('101', 2) return?

A). 5

B). 101

C). NaN

D). 2

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 output of (255).toString(2)?

A). 255

B). 11111111

C). ff

D). 10

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

A). 4

B). 5

C). 45

D). 123

Which method converts a string to a floating point number?

A). parseFloat()

B). toFixed()

C). toPrecision()

D). Number()

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

A). 1

B). 0

C). NaN

D). undefined