Which method returns a number in exponential notation?

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

A). toString()

B). parseInt()

C). toFixed()

D). valueOf()

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

A). 255

B). 11111111

C). ff

D). 10

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()

What does parseFloat('12.34abc') return?

A). 12

B). 34

C). NaN

D). undefined

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

A). 5

B). 101

C). NaN

D). 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 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

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

A). 4

B). 5

C). 45

D). 123