What is use of math.random() ?

Answer 1

Math.random() returns a (pseudo)random number between 0 and 0.999999999... Some encryption programs use random numbers, you'd use a random number if you were writing a program to simulate tossing a coin or throwing dice. Random numbers are useful in statistics, and so on.

Answer 2

choose a number between 0 - 1.

Answer 3

it is use for get the random value