What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2
What is the result of parseInt('0xF', 16)?
A). 15
B). 0
C). NaN
D). 16
What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
Which method returns a number in exponential notation?
A). toFixed()
B). toExponential()
C). toPrecision()
D). toString()
Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()
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 Number('123abc') return?
A). 123
B). NaN
C). 123abc
D). undefined
What does (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123