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.isInteger(123.45) return?
A). 1
B). 0
C). NaN
D). undefined
What does (123.456).toFixed(1) return?
A). 4
B). 5
C). 45
D). 123
What is the output of (255).toString(2)?
A). 255
B). 11111111
C). ff
D). 10
What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2
What does Number('123') return?
A). 123
B). 123
C). NaN
D). 23
How do you format a number to two decimal places?
A). toFixed(2)
B). toExponential(2)
C). toPrecision(2)
D). toString(2)
Which method can convert a number to a different base (e.g., hexadecimal)?
A). toString()
B). parseInt()
C). toFixed()
D). valueOf()
Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()
What does the method parseInt('10.5') return?
A). 5
B). 11
C). 10
D). NaN