What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
Which method returns a number in exponential notation?
A). toFixed()
B). toExponential()
C). toPrecision()
D). toString()
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
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.isNaN('123') return?
A). 1
B). 0
C). NaN
D). undefined
What does Number('123abc') return?
A). 123
B). NaN
C). 123abc
D). undefined
What does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined
Which method converts a number to a string?
A). toFixed()
B). toString()
C). valueOf()
D). parseFloat()
What does Number('123') return?
A). 123
B). 123
C). NaN
D). 23