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 the primitive value of a Number object?
A). toString()
B). valueOf()
C). toFixed()
D). parseFloat()
What does Number.isInteger(123.45) return?
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()
What does Number.isNaN('123') return?
A). 1
B). 0
C). NaN
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 (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123
What does isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
Which method converts a string to a floating point number?
A). parseFloat()
B). toFixed()
C). toPrecision()
D). Number()