What does parseFloat('12.34abc') return?
A). 12
B). 34
C). NaN
D). undefined
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
What does the method parseInt('10.5') return?
A). 5
B). 11
C). 10
D). NaN
Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()
What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2
What is the result of isNaN('Hello')?
A). 1
B). 0
C). NaN
D). undefined
What does Number.isNaN('123') return?
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 is the result of parseInt('0xF', 16)?
A). 15
B). 0
C). NaN
D). 16
Which method returns a number in exponential notation?
A). toFixed()
B). toExponential()
C). toPrecision()
D). toString()