Which method would you use to check if a value is a finite number?

What does (123.456).toFixed(1) return?

A). 4

B). 5

C). 45

D). 123

What does Number('123') return?

A). 123

B). 123

C). NaN

D). 23

Which method can convert a number to a different base (e.g., hexadecimal)?

A). toString()

B). parseInt()

C). toFixed()

D). valueOf()

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 the method parseInt('10.5') return?

A). 5

B). 11

C). 10

D). NaN

What does Number.isNaN('123') return?

A). 1

B). 0

C). NaN

D). undefined

What does Number.isInteger(123.45) return?

A). 1

B). 0

C). NaN

D). undefined

What does parseFloat('12.34abc') return?

A). 12

B). 34

C). NaN

D). undefined

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