Math Obj properties and methods

Question 1

What properties does the math object have?

Answer 1

Math.PI() returns Ratio of the circumference of a circle to its diameter, approximately 3.14159.

Question 2

What method returns the absolute value of a number?

Answer 2

Math.abs(n)

Question 3

What method returns the cube root of a number?

Answer 3

Math.cbrt(n)

Question 4

What method rounds numbers down to the nearest integer? or what about up to the nearest?

Answer 4

Math.floor(n) Math.ceil(n)

Question 5

What method returns the max number out of a group? syntax?

Answer 5

Math.max() will take numbers separated by commas or an array passed as a variable with spread operator

Question 6

What method returns the min number out of a group? syntax?

Answer 6

Math.max() will take numbers separated by commas or an array passed as a variable with spread operator

Question 7

What method returns a number to the n root? how does this differ from the other root function?

Answer 7

Math.sqrt(x) Returns the positive square root of a number.

Question 8

Returns the integer part of the number x, removing any fractional digits.

Answer 8

Math.trunc(x)

Question 9

Method Returns a pseudo-random number between 0 and 1. How do we get it to a certain number range?

Answer 9

Math.random()

function getRandomArbitrary(min, max) {
    return Math.random() * (max - min) + min;
}