Answer & Solution
Answer: Option C
Solution:
The toPrecision() method formats a number to a specified length, so toPrecision(3) returns a string with the number written with three significant digits.
Q
What does toPrecision(3) do?
Related Questions on Average
Which method would you use to check if a value is a finite number?
A). isNaN()
B). isFinite()
C). Number()
D). toFixed()
Which method returns the primitive value of a Number object?
A). toString()
B). valueOf()
C). toFixed()
D). parseFloat()
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
Which method converts a number to a string?
A). toFixed()
B). toString()
C). valueOf()
D). parseFloat()
What does Number('123abc') return?
A). 123
B). NaN
C). 123abc
D). undefined
What does Number.isNaN('123') 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 does isFinite(123) return?
A). 1
B). 0
C). NaN
D). undefined
What does parseInt('101', 2) return?
A). 5
B). 101
C). NaN
D). 2